Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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in a survey given by camp counselors, campers were asked if they like t…
0.93
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calculating probabilities of compound events a professional pool - play…
There is about a 27% chance of her sinking at least one ball on her break 14 or fewer times in 20 games. This result is not unusual and there is no convincing evidence that her av…
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a large citys transit department claims that only 10% of city buses run…
There is about a 3% chance that 5 or more buses are running off schedule. This is unusual and is convincing evidence that the true probability that a bus is off schedule is more t…
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during final exam weeks, many college students exercise to fuel their s…
$0.76$
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a cereal company hopes to increase its sales by putting prizes in rando…
In many, many boxes of cereal of this type, we can expect about 75% of the boxes to contain a prize.
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paintings by the renowned twentieth - century us ____ were featured in …
B. artists Thomas Hart Benton and Jackson Pollock
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a teacher offers gift cards as a reward for classroom participation. th…
\(\frac{1}{6}\)
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a candle shop owner collected data on customers favorite scents, as sho…
0.14
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lesson 7 standard deviation do now: find the interquartile range of the…
1. IQR = 40 a. Mean of shoe - size data = 7 b. Standard deviation of shoe - size data = 0 2. a. Data set A shows greater variability because its standard deviation ($7.4$) is grea…
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insurance company executives surveyed 200 young adults about their firs…
0.14
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a researcher randomly surveyed 1,477 farmers to determine the geographi…
$\frac{251}{365}$
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a researcher randomly surveyed 1,477 farmers to determine the geographi…
$\frac{291}{366}$
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name: dariana medeiros date: 6/13 block: a lesson 10: outliers (continu…
1. The outlier 100.0 in the temperature data set should be removed as it is likely a measurement error. 2. The outlier in the customer - spending data set is 10000. Whether to rem…
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question 11 (1 point) abl. of means needs a preposition. true false
True
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a researcher randomly surveyed 1,477 farmers to determine the geographi…
# Explanation: ## Step1: Recall conditional - probability formula $P(V|M)=\frac{P(V\cap M)}{P(M)}$. In terms of counts from the two - way table, $P(V|M)=\frac{n(V\cap M)}{n(M)}$, …
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the following text is adapted from jane austens 1814 novel mansfield pa…
A. To offer Tom's assurance that the play will be inoffensive and involve only a small number of people
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a researcher randomly selects 95 high school students and asks their ha…
$P(B|F) = 0.45$; given that the student has fair dancing skills, there is a $0.45$ probability that they prefer to write with block letters.
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the following two - way table shows the distribution of high school stu…
No, \(P(A) eq P(A|B)\)
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and how long employees have been at the company. suppose an employee is…
No, $P(A) eq P(A|B)$
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the following two - way table shows the distribution of daily traffic a…
No, $P(A) eq P(A|B)$
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a researcher randomly selects 165 vehicles and sees how many miles each…
$P(B|M) = 0.36$; given that the vehicle has been driven many miles, there is a 0.36 probability that the color is blue.
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students majoring in psychology surveyed 200 of their fellow students a…
0.13
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question 27 (mandatory) (1 point) listen the cf olig/o means a) odor. b…
b) few, scanty.
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a researcher randomly selects 95 high - school swimmers and asks them w…
$P(F|B) = 0.51$; given that the student prefers brand B, there is a 0.51 probability that their strongest stroke is freestyle.
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a contractor claims that she finishes a job on - time 90% of the time. …
The dotplot does not provide convincing evidence that her true, on - time completion rate is less than 90% because 7 or fewer on - time completions happened 19% of the time in the…
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2. the number of raisins in a cereal with a name brand and the generic …
For the cereal problem: a) Brand - name cereal b) Brand - name cereal c) Generic cereal For the test - time problem: a) Lin b) Lin's test - finishing times are more consistent.
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insurance company executives surveyed 200 young adults about their firs…
0.11
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order the dot plots from least to greatest standard deviation. b, c, a,…
B, C, A, D
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a study reported that about half of high school seniors study for upcom…
Yes, more than half of the simulated results are over 15.
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13. (05.03 mc) read the sentence. answer the question that follows. the…
B. Delicious
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name: date: 9/12 block 3e lesson 9: standard deviation continued do now…
a) Forest B has a higher standard deviation. b) It means the tree heights in forest B vary more widely from the average tree height in forest B. c) Forest A has more consistent tr…
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what is the standard deviation for the data given: {12, 13, 29, 18, 61,…
15.87
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find the mean of the given data 8, 7.5, 9, 6, 13
$8.5$
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given a variance of 64, what is the standard - deviation? 0 4096 6.8 8
8
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before you can begin calculating the variance, you must first: find the…
find the mean
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if the standard deviation of a data set is 4, what is the variance? 12/…
16
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what does this symbol represent? sigma variance standard deviation mean…
Standard Deviation
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how do you calculate the standard deviation? take the square root of th…
Take the square root of the variance.
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how do you calculate the standard deviation? 9/13 divide the variance b…
Take the square root of the variance.
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four data sets are shown below: set 1: {10, 19, 38, 50, 51} set 2: {5, …
Set 1
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ervin bowled 7 games last weekend. his scores are: 155, 165, 138, 172, …
22.61
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3. (04.02 mc) read the excerpt from anna howard shaws the fundamental p…
The central idea is the vision of a government where the people are the supreme power, embodying the profoundest measures of freedom and justice, which inspired the writing of the…
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what is the variance if the standard deviation is 1.63? 2.66 3.26 0.816…
2.66
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7. draw a line of fit for the data. then write an equation of the line …
The equation of the line of fit is $y=-x + 40$
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how is variance related to standard deviation? variance is the square o…
Variance is the square of standard deviation
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what is the standard deviation of the numbers 4, 5, and 6?
0.816
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what is the mean of the numbers 4, 5, and 6?
5
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is there a relationship between the protein content and the cost of del…
A. Positive B. There is a gap between the data point for Veggie and others B. Vegetables are low in protein relative to meat and poultry Let's assume using software like Excel's C…
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what is the standard deviation of the numbers 3, 5, and 7? 0.816 1.63 2…
$1.63$
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what is the mean of the numbers 3, 5, and 7? 6 4 7 5
5
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what is the first step in calculating the standard deviation for a set …
Find the mean
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mr green, mr green, dont you mean the mongol empire? oh, me from the pa…
1. Akbar and Aurangzeb 2. Roughly 200 years from the early 16th to early 18th centuries, technically until after 1857 3. Muslims who created an empire in India; Babur, the founder…
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7. draw a line of fit for the data. then write an equation of the line …
$y=-x + 40$
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which set of numbers is more spread out: 4, 5, 6 or 3, 5, 7? 4, 5, 6 ca…
3, 5, 7
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when calculating the sample standard deviation, what is the divisor in …
B. $n - 1$
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what symbol is used to represent the population standard deviation? mu …
Sigma
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use the data set to the right to answer the following questions a. sket…
b. \((4,2)\) c. The \(y\) value of \(2\) would have to change to \(15\)
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for a table of 32 nations, consider the following correlations. complet…
F. Internet users and Broadband subscribers
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which sentence most effectively helps readers envision a scene? the rea…
"If you are sitting in the gallery you will have a clear view of the stage as it projects out from the far side of the round enclosure."
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what should a reader consider when tracing chronological text structure…
- the meaning behind the events - the causal relationships between events - the author's purpose in describing the events
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food is valuable in elizabethan england, far more so than in the modern…
Transportation was difficult in Elizabethan England.
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the accompanying table contains data on the number of individuals with …
(The actual value of $r$ depends on the calculations of the sums from the data. Without performing the actual calculations on the data in the table, we cannot give a specific nume…
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the accompanying table contains data on the number of individuals with …
a. C. For countries with GDP less than $5000$ billion, there is a clear trend in that countries with larger GDP have a larger number of broadband subscribers b. $(8000,176000000)$…
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introductory survey project - school - statistics - room 404 1. choose …
The mean number of days people prefer to do outdoor activities in a week is approximately 4.67.
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4. what were the houses of the average person in ancient egypt made fro…
4. Mud - brick. 5. Peasant class. 6. The pharaoh. 7. Believing in multiple gods. 8. They were thought to control natural phenomena, human affairs, and the after - life; rituals an…
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which sentence from the article best supports the idea that its natural…
B. That means you go through sudden growth spurts, and your coordination doesn't always have time to catch up with the rest of you.
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name skylar grant date 10 - 2 - 25 magic number: the magic number is in…
Magic Number - Expanded form: \(3000 + 400+40 + 6\), Words: three thousand four hundred forty - six; Coins: 50 cents, 15 cents, 27 cents; Sentences: 1. The dog barked at the cat. …
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name skylar grant date 10 - 2 - 25 magic number: the magic number is in…
# Explanation: ## Step1: Analyze Magic Number The number 3[SSE Completed, Client Connection Error][SSE Completed, Client Connection Error][LLM SSE On Failure]
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1. match each situation to the number that best models it. zero positiv…
Depositing money into the bank: Positive Integer Standing at Sea Level: Zero Paying for school supplies: Negative Integer Mean of student ages: 12.25
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impeachment means to charge a government official in the house so that …
The official is tried in the Senate.
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use this information to answer questions 2 & 3. the following are the a…
Median: 12 Mode: 10 Range: 6
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most roller coasters get their speed by dropping down a steep initial i…
B. There is a strong, positive, linear association between drop and speed; the greater the coaster's initial drop, the higher the top speed.
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use this information to answer questions 2 & 3. the following are the a…
$12.25$
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question 5 of 5 > the distribution of heights in a population of women …
The mean height $\mu = 65$ inches and the standard deviation $\sigma = 3$ inches.
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what does it mean to find the inverse of a function? the x’s and y’s ar…
the x's and y's are switched
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here are several scatterplots. the calculated correlations are 0.000, -…
(a) matches 0.000 (b) matches - 0.977 (c) matches 0.777 (d) matches - 0.487
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key terms. match the following terms with their definitions. 1. politic…
1. E. Groups of people who share similar beliefs about how the government should be run. 2. G. Selecting candidates who will run for political office and announcing their intent t…
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7) a line of best fit is drawn through data points displayed in a scatt…
7) c) The line should go through the "middle" of the data. 8) a) A line would not be appropriate because there is a negative association (and more importantly, the points follow a…
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3) what would be an example of bivariate data with a positive associati…
3) c. Amount of electricity used; amount owed on electric bill 4) a. As one variable increases, the other variable decreases 5) c. For linear associations the line of best fit mus…
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2) which scatter plot shows data with no correlation? select all that a…
A. Scatter - plot a B. Scatter - plot b C. Scatter - plot c D. Scatter - plot d
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1) which of the following best describes the relationship between the v…
1) b) Linear association 2) a) b) c) d)
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...for we must consider that we shall be as a city upon a hill, the eye…
John Winthrop meant the Puritan - led Massachusetts Bay Colony was to be a model Christian community for others to observe. This idea shaped Puritan society by promoting unity and…
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complete the sentence with the word that best fits the overall meaning …
confer
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question 21 (2 points) which of the following is a key kpi for o&m perf…
B. Mean Time Between Failures (MTBF)
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question 25 in the term postprandial, what does the suffix -prandial me…
A. meal
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complete the sentence with the word that best fits the overall meaning …
misrepresentation
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complete the sentence with the word that best fits the overall meaning …
secluded
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analyzing maslows hierarchy of needs: scenarios read each of the follow…
Scenario 1: Physiological need (due to hunger affecting concentration). Scenario 2: Esteem need (desire for recognition in performance). Scenario 3: Safety need (concern over fina…
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the people who responded to a survey reported that they had either brow…
$\frac{13}{25}$
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which scenario depicts two independent events? the school play opens to…
The school play opens tonight and it is raining.
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question 3 of 5 paying yourself first, sticking to a budget, pacing you…
B. ways to balance expenses and savings
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a bag contains eleven equally sized marbles, which are numbered. two ma…
$\frac{24}{121}$
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a bag contains eleven equally sized marbles, which are numbered. two ma…
# Explanation: ## Step1: Calculate probability of first - marble being shaded There are 5 shaded marbles out of 11 marbles. So the probability of choosing a shaded marble first, $…
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a bicycle manufacturer is studying the reliability of one of its models…
3 percent
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a month of the year is chosen at random. what is the probability that t…
D. $\frac{5}{12}$
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the hawaiian language has 12 letters: five vowels and seven consonants.…
$\frac{25}{144}$
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when a softball player gets a hit, it can be a single, double, triple, …
C. 20 percent
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all freshmen, sophomores, juniors, and seniors attended a high school a…
$\frac{11}{320}$
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a six - sided number cube is rolled twice. what is the probability that…
\(\frac{1}{6}\)
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use the venn diagram to calculate probabilities. which probability is c…
$P(A)=\frac{3}{5}$