統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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select the text from the paragraph that best helps you understand that …
the paralyzed cockroach
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19) choose the correct answer. what kind of figure of speech does this …
None of the above options are correct for this sign. ### 20)
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kiran is driving along a highway at a speed of 65 miles per hour. answe…
The independent variable, $x$, represents the time, and the dependent variable is the distance, because the distance depends on the time. A function relating these variables is $C…
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read the passage and then answer the question. there are nearly thirty …
D. many
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what similarities did stoicism and epicureanism share? a the presumptio…
E. A desire to explain the meaning of human existence
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david is buying bagels for a family gathering. each bagel costs $1.50. …
The independent variable, $x$, represents the number of bagels purchased, and the dependent variable is the total cost, because the total cost depends on the number of bagels purc…
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9) read the passage. choose two of the 5 senses the bold word appeals t…
C. smell
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what is the maximum number of swimmers that can be in the pool with 3 l…
160
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montraie has 13 gallons of gas in his car at the beginning of a trip. e…
The independent variable, $x$, represents the total hours driven, and the dependent variable is the gallons of gas remaining in the tank, because the gallons of gas remaining in t…
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select the text from the paragraph that best helps you understand that …
These include special shoes and new types of weight - lifting machines, treadmills, and exercise bikes that all work without gravity.
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rahul bought a bag containing 90 small candies. he starts eating the ca…
The independent variable, $x$, represents the number of minutes eating, and the dependent variable is the number of candies left in the bag, because the number of candies left in …
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listed below are pulse rates (beats per minute) from samples of adult m…
The mean for males is $75.3$ beats per minute and the mean for females is $84.1$ beats per minute.
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find the (a) mean, (b) median, (c) mode, and (d) mid - range for the da…
(a) Mean: $\approx1458.33$ (b) Median: $1500$ (c) Mode: $1500$ (d) Mid - range: $1475$ (e) First sub - question: B. The sample consists of the "best buy" TVs, so it is not a rando…
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find the (a) mean, (b) median, (c) mode, and (d) midrange for the data …
$1475.0$
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find the (a) mean, (b) median, (c) mode, and (d) midrange for the data …
1500
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the caffeine content of 8 - ounce cans of a certain cola drink is appro…
B. 8%
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find the (a) mean, (b) median, (c) mode, and (d) midrange for the data …
$1458.3$
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vocabulary from latin and greek roots 1. according to the author, what …
1. A. sight and hearing 2. C. as natural phenomena such as wind and moonlight 3. B. the similarity of ghost sightings recorded by many different people For word - definitions: rec…
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the caffeine content of 8 - ounce cans of a certain cola drink is appro…
B. 8%
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a random sample of 10 subjects have weights with a standard deviation o…
$108.1475$ kg$^{2}$
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which two events are independent? a and x a and y b and x b and y | | x…
A. A and X
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find the mean of the data summarized in the given frequency distributio…
\(51.8\)
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for the soccer banquet, the players and their family members selected t…
The second two - way table (with Rice: Chicken 21, Fish 6, Vegetarian 5; Potatoes: Chicken 18, Fish 4, Vegetarian 8; Total: Chicken 39, Fish 10, Vegetarian 13, Total 62)
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use the stem - and - leaf plot to list the actual data entries. what is…
The minimum data entry is 26. The maximum data entry is 84. A. 26, 32, 41, 43, 45, 47, 49, 50, 51, 52, 53, 54, 55, 56, 58, 59, 69, 73, 79, 84
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what are some benefits of representing data sets using frequency distri…
A. Organizing the data into a frequency distribution makes it possible to graph quantitative data. B. It is easier to determine the minimum and maximum values of a data - set when…
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what are some benefits of representing data sets using frequency distri…
A. It can be easier to determine the class boundaries by looking at a graph of the frequency distribution. B. Graphing a frequency distribution makes it possible to find the total…
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what is the difference between relative frequency and cumulative freque…
B. Relative frequency of a class is the proportion of the data in that class, while cumulative frequency of a class is the sum of the frequencies of that class and all previous cl…
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after constructing an expanded frequency distribution, what should the …
B. The sum should be 1, since in the sum of the relative frequencies $\sum\frac{f}{n}$, the numerator will be $n = \sum f$.
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use the ogive to approximate (a) the number in the sample, (b) the loca…
(a) 50 (b) C. 23.5 - 24.5 pounds
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1-92. calculate the mean of each data set below. can you find any short…
a. Mean is 8 b. Mean is 12 c. Mean is 4
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the total sales of a company (in millions of dollars) t months from now…
(A) $S'(t)=0.03t^{2}+t + 8$ (B) $S(5)=59.75$, $S'(5)=13.75$ (C) $S(8) = 107.12$ means the total sales 8 months from now is 107.12 million dollars; $S'(8)=17.92$ means the rate of …
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1-91. marissa is drawing coins from a bag that contains 5 pennies, 4 ni…
a. $\frac{1}{4}$, $0.25$, $25\%$ b. $\frac{1}{5}$, $0.2$, $20\%$ c. Part a
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the two - way table shows the number of books of each type in elizas ho…
0.4
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use the frequency histogram to complete the following parts. (a) determ…
(a) 6 (b) 10 (c) 30 (d) 5
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display the data to the right in a pareto chart. describe the differenc…
A. The pie chart shows the individual responses. The Pareto chart shows patterns in the data.
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information about the recycling drive at school is shown in the table. …
A and B are not independent events because $P(A|B) eq P(A)$.
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(a) construct a pareto chart to display the data. choose the correct ba…
The bar graph with bars in the order: Summer (highest), Spring, Fall, Winter (lowest) (assuming one of the options has this correct order). Without seeing the exact heights of the…
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scientists use the weight of a spaceship and the distance the ship must…
A. figure out
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32. games the final scores of contestants on a game show were -14, 0, 7…
27
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display the data to the right in a pareto chart. describe the differenc…
A. The pie chart shows the individual responses. The Pareto chart shows the rankings of the seasons.
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(c) identify one fact that the data show. choose the correct answer bel…
D. About two - thirds of females have a fibula length between 31.5 and 39.5 centimeters.
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use the frequency histogram to complete the following parts. (a) identi…
(a) The class with the greatest relative frequency is approximately 40.5 - 42.5 centimeters, and the class with the least relative frequency is approximately 30.5 - 32.5 centimete…
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while in space, an astronauts health is monitored by doctors on earth. …
Observed
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categorization 30 points. place the characteristics of the new england …
Maryland: Founded as a colony where "bold" Catholics could practice their religion freely. Virginia: Developed a plantation economy. South Carolina: Developed a plantation economy…
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female fibula lengths (a) the class with the greatest relative frequenc…
(a) 38.5 to 40.5 (b) 30.5 to 32.5 (c) 0.22
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financial literacy the last 5 transactions at mr. brighams atm were $25…
$36$
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a survey was taken of children between the ages of 7 and 12. let a be t…
A and B are not independent events because \(P(A|B)=0.375\) and \(P(A) = 0.25\)
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(a) the class with the greatest relative frequency is 38.5 to 40.5 cent…
(a) The class with the greatest relative frequency is 40.5 to 42.5 centimeters. (b) The greatest relative frequency is about 0.22, and the least relative frequency (for the class …
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estimate the amount of error in a calculation that is based on using a …
(Step 1) 32 (Step 2) length (Step 3) 4 (Step 4) 2 (Step 5 - Maximum Area) 15360 (Step 5 - Error) 3600
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which statement is true about whether c and y are independent events? c…
C and Y are not independent events because \(P(C|Y) eq P(C)\).
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drag the right word to the words that mean the opposite faithful, stead…
Drag "unreliable" to the words "faithful, steady, trustworthy"
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use the frequency histogram to complete the following parts. (a) identi…
(a) The class with the greatest relative frequency is $38.5 - 40.5$ to centimeters. (b) The greatest relative frequency is about $0.22$, and the least relative frequency is about …
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display the data to the right in a pareto chart. describe the differenc…
C. Favorite Season with bars in order S, Sp, F, W where the height of the bar for S is the tallest, followed by Sp, then F, and W is the shortest.
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find p(y|b) from the information in the table. to the nearest tenth, wh…
0.4
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information about the students at jackson high school is shown in the t…
Out of the 352 eleventh graders at the school, 173 of them are girls.
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8. explain the meaning of the point (0, 0). 9. how long does it take ea…
9. Horse A: $\frac{10}{3}$ min, Horse B: 2 min 10. Horse A: $d=\frac{3}{10}t$, Horse B: $d=\frac{1}{2}t$ 11. Horse A: 3.6 mi, Horse B: 6 mi 12. Draw a line with a slope greater th…
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information about the students at jackson high school is shown in the t…
Out of the 621 girls at the school, 182 of them are eleventh - graders.
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read the passage. music and the brain from the beginning of recorded hi…
There are many reports on the topic.
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christchurch, nz low temperatures (°c) 5 6 7 8 9 10 11 12 13 14 15 st. …
1. False. The standard deviation is a measure of variability and there is some variability in the data set. 2. True. Chicago's temperatures are the same as St. Louis's, but 3 degr…
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decide if each statement is true or false. explain your reasoning 1. th…
1. False 2. True 3. True
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decide if each statement is true or false. explain your reasoning. 1. t…
1. False; The standard deviation is a measure of variability and there is some variability in the data set. 2. True; Chicago's temperatures are the same as St. Louis's but 2 degre…
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decide if each statement is true or false. explain your reasoning. 1. t…
1. False. Standard deviation measures variability. There is variability in the Christchurch data set even though it is symmetric. 2. True. Chicago's data is a constant shift of St…
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new england colonies middle colonies southern colonies included connect…
New England Colonies: Included Connecticut, Rhode Island, and Massachusetts; Pilgrims and Puritans settled here; Economy based on fishing, lumber, and fur trade. Middle Colonies: …
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question evaluate. 2(-3)(5) explanation when parentheses are next to a …
$-30$
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25. a management information system (mis) is 26. in your own words, def…
25. A system for management - related information collection, processing, storage, and distribution to support decision - making. 26. A technique of changing variables/assumptions…
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in city lake, researchers caught, marked, and released 176 bass. later,…
1232 bass
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given the following relative - frequency table for the probability dist…
A. $\mu = 15.65, \sigma = 4.98$
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300 high school students were asked how many hours of tv they watch per…
None of the given options are correct. The maximum error of estimate is approximately 0.0475 or 4.75% (but the options seem to be percentage - formatted incorrectly in terms of th…
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question 16 1 pts what is the center of 0.1, 0.3, 0.02, 0.09, 0.4, 0.05…
D. 0.2
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a board - game club meets each week at the local library. people bring …
We are given a sample of $n = 50$ people, and the sample - proportion $\hat{p}=0.67$. For an $83\%$ confidence interval, the significance level $\alpha=1 - 0.83 = 0.17$. Then $\al…
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what is the expected value of the probability distribution of the discr…
$\mu = 7.72$
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you flip a fair coin 25 times in the air. what is the relative frequenc…
50%
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question 13 1 pts you flip a fair coin 25 times in the air. what is the…
48%
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analyze the scatterplot graph. age vs. weight which trend does the grap…
As age increases, weight increases.
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based on the histogram below, how are the data distributed, and where i…
Negatively skewed, and the mean is to the left of the median.
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question 11 1 pts the grades for the latest statistics exam are normall…
C. 47.72%
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question 10 solve for x ~ b(10, 0.75) for x = 5. 0.06 0.09 0.23 0.52 1 …
0.23
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which is a discrete random variable? o y = \height of an emperor pengui…
C. Z = "results of flipping two coins"
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the length of adult parakeets is normally distributed. if the mean leng…
3.59%
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this excel feature can be used to replace a word in the worksheet with …
B. Thesaurus
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the post - cold war period means the time right after the collapse of t…
True
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this is true for any integers a and b. (it is actually true for any num…
First blank: $7+(-9)$ Second blank: $-2$
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out of a sample of 760 people, 367 own their homes. construct a 95% con…
To construct a 95% confidence interval for a proportion, we use the formula $\hat{p}\pm z\sqrt{\frac{\hat{p}(1 - \hat{p})}{n}}$, where $\hat{p}$ is the sample - proportion, $z$ is…
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match the description with the correct colonial region. new england col…
New England Colonies: Included Connecticut, Rhode Island, and Massachusetts; Pilgrims and Puritans settled here; Economy based on fishing, lumber, and fur trade. Middle Colonies: …
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question 6 three six - sided dice are rolled. what is the probability t…
0.5%
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question 5 1 pts if continuous random variable x is normally distribute…
C. 42.75%
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question 4 1 pts you flip a coin 12 times. it lands on tails 9 times. w…
0.25
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qq1:when we say that x is correlated with y, we mean that a. x causes y…
c. increasing values of X are consistently associated with either increasing or decreasing values of Y.
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question 2 1 pts what is the probability of drawing a diamond or a spad…
10.7%
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the painting above is an example of how an artist can use to create a d…
A. analogous colors
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question 8 (3 points) the data represent the number of cans collected b…
Blank 4: \(16.36\) Blank 5: Decreases Blank 6: \(14\)
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which describes data that is faked or misplaced? reasonable authentic i…
C. invalid
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question 8 (3 points) the data represent the number of cans collected b…
1. 18.5 2. 16 3. decreases; 16.36; decreases; 14
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word study anglo - saxon suffix - some a. directions: select the correc…
A. 1. fearsome 2. meddlesome 3. meddlesome 4. quarrelsome B. 1. The constant noise from the construction site is irksome. 2. The freshly - baked pie looked toothsome. 3. The large…
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question 7 (1 point) select all the distribution shapes for which the m…
A. bell - shaped B. uniform E. symmetric
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question 6 (1 point) the mean of data set a is 43.5 and the mad is 3.7.…
Blank 1: B Blank 2: greater than Blank 3: A Blank 4: A's Blank 5: 3.7 Blank 6: B's Blank 7: 4.1
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question 5 (1 point) which of these best estimates the standard deviati…
A. 5 points
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question 4 (1 point) the shoe size for all the pairs of shoes in a pers…
Blank 1: 7 Blank 2: 0
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question 3 (1 point) the data represent the number of cans collected by…
1. Mean: $18.5$ 2. Median: $16$ 3. The mean decreased from $18.5$ to approximately $15.45$ and the median decreased from $16$ to $14$.
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question 2 (1 point) what is the iqr? number of branches on 10 year old…
A. 7 branches