统计与概率
数据分析、概率分布、假设检验与统计方法。
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the test scores of a geometry class are given below. 90, 75, 72, 88, 85…
258
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a poll worker analyzing the ages of voters found that $mu = 65$ and $si…
C. 71
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a set of data has a mean of 12 and a standard deviation of 3. a data po…
The data point is 1.3 standard deviations away from 12.
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the mean of a set of credit scores is $mu = 690$ and $sigma = 14$. whic…
C. 720
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the test scores of a geometry class are given below. 90, 75, 72, 88, 85…
258
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which formula is used to calculate the standard deviation of sample dat…
The first option: $s = \sqrt{\frac{(x_1-\bar{x})^2+(x_2 - \bar{x})^2+\cdots+(x_n-\bar{x})^2}{n - 1}}$
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employee weekly salary anja $245 raz $300 natalie $325 mic $465 paul $1…
17,507.5
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multiple choice question when a reviewer rates every employee near the …
C. leniency
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which statement about the data set is true? the mean is greater than th…
The mean is greater than the median.
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analyze the graph and determine the most appropriate measure of center.…
The median is most appropriate because the graph is skewed.
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2012 housing prices (thousands of dollars) a report states the average …
Median
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the shape of this graph is best described as based on the shape of the …
median
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the shape of this graph is best described as symmetric skewed constant …
skewed
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salaries for the research and development department are given as $48,3…
Mean: $\$34743$, Median: $\$34960$, Mode: None
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which of the following statements are true? check all of the boxes that…
The female dog data is best represented by the median. The female dog data is less skewed than the male dog data.
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the minimum of the data is the first quartile is the median of the data…
The minimum of the data is \(40\). The first quartile is \(43\). The median of the data is \(61\). The third quartile is \(65\). The maximum of the data is \(97\).
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an engineer wants to determine how the weight of a gas - powered car, x…
ŷ = -0.0071x + 43.8
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find the mean for the scores: 3,860, 5,500, 8,560, 4,200, 5,340. the me…
$5492$
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accountants often use the median when studying salaries for various bus…
$29765$
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last saturday, jims scout troop raked yards in the community. this tabl…
12.3
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dan went on a hike last weekend and brought two quarts of water to drin…
15
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a magazine has published three different graphs depicting the relations…
the study evaluating the relationship between diet and heart disease in a sample size of 1,000
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statistically significant results are more likely to be obtained from e…
E. have a large sample size in both groups.
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analects book 2 chapter 3 confucius said: if you govern through laws an…
1. Doc C (Confucius) suggests that a government should rule through virtue and ritual rather than just laws and punishments. Ruling by virtue will make people develop a sense of s…
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even for professional dancers, it can take weeks to grasp the timing of…
In this paragraph, grasp means "to fully understand something."
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while visiting an art gallery, max thought about his uncle, who is blin…
C. realized
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read the excerpt from act 5, scene 1, of julius caesar. octavius. now, …
confident
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read the excerpt from act 5, scene 2, of julius caesar. brutus. ride, r…
The tone would be less urgent as the enemy moves more slowly.
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directions: select the correct text in the passage. which word meaning …
gallant
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1. assessment: what is the best meaning of the word \vilified\ as it is…
B. condemned
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read the excerpt from act 5, scene 1, of julius caesar. octavius. come,…
It emphasizes the savagery of the assassins' actions toward Caesar.
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read the excerpt from act 5, scene 2, of julius caesar. alarum. enter b…
lack of enthusiasm
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question 4 4. write: what does the word \commemorating\ indicate about …
The statue is meant to honor and preserve the memory of someone or something, and pay tribute to it.
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on a planet far far away from earth, iq of the ruling species is normal…
c. 74.92 d. Q1: 90.86 Q3: 115.14 IQR: 24.28
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the more people involved in the decision - making process and the more …
The text relates to the subfield of Politics within Social Science as it delves into political tactics, legislative procedures, and decision - making in a political context.
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which of the statements are examples of a correlation? students who att…
Students who attend lecture regularly and higher grades on exams An increase in temperature and an increase in the amount of ice cream sold
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1. multiple choice: what is the best meaning of “tumultuous” as it is u…
B. chaotic
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1. what sentences should you re - read when determining the meaning of …
The sentence the unknown word is in, as well as the sentences before and after it.
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which situation is the best example of regulation in an economic system…
A state agency has been created to monitor the production and distribution of sports drinks.
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what role do government agencies play in a mixed market economy? they r…
They regulate some aspects of production and distribution.
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answer point a means that the unit rate is 2 pounds per dollar point b …
Point B means that the unit rate is $4.50 per pound
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given the points graphed in the following figure, use quadratic regress…
$y=-0.286x^{2}-2.143x + 0.857$
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you spin the spinner twice. what is the probability of landing on a fac…
$\frac{1}{4}$
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you flip a coin twice. what is the probability of getting tails and the…
$\frac{1}{4}$
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you pick a card at random. without putting the first card back, you pic…
$\frac{2}{7}$
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you roll a 6 - sided die two times. what is the probability of rolling …
$\frac{1}{6}$
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you spin the spinner twice. what is the probability of landing on an ev…
$\frac{1}{4}$
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you pick a card at random. without putting the first card back, you pic…
$\frac{1}{10}$
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you spin the spinner twice. what is the probability of landing on a pri…
$\frac{3}{8}$
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you pick a card at random. without putting the first card back, you pic…
$\frac{3}{10}$
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you pick a card at random. without putting the first card back, you pic…
$\frac{1}{10}$
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my assignments of the crowd followed suit, making it seem as if the ent…
D. People can be led towards making good choices
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using the internet, newspapers, or magazines: find an example of each t…
The y - axis does not start at 0, exaggerating differences in housing costs among cities.
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antonyms are words with opposite meanings. the words asleep and awake a…
1. narrow 2. found 3. late 4. sour 5. dark 6. dirty
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how do moral dilemmas in act 5, scene 3, contribute to meaning in juliu…
The dilemmas demonstrate how being inflexible can result in dire situations.
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brutus: cassius: how do these moral dilemmas contribute to the meaning …
Both dilemmas demonstrate the tragic results of war.
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assignment active \i didnt take them seriously\ usually i thought i sto…
The author and many others underestimated the Nazis by focusing on their seemingly comical and repulsive qualities, rather than recognizing the true and extreme danger they posed.…
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kinds: the national geographic and the junior red cross news. because t…
C. The boys treat the girls terribly, which makes Miss Ralston determined to show them girls are equal to boys.
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text dependent questions for chapter 9: in the witchs house 1. what did…
1. The answer depends on the details in the text. For example, they might have seen strange furniture, potions, etc. 2. The text should describe how the witch greeted or interacte…
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part a: by percent a circle graph represents a whole, divided into sect…
1. a) 30% b) (Answer depends on the circle - graph, not clear from the image) c) 20 2. | Category | Amount per Month | Percent of Budget | |--|--|--| | Clothes | $300 | 15% | | Ch…
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opportunity cost means that something needs to be replenished. given up…
B. given up
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the trouble started right away as soon as we got into the school yard, …
The boys react aggressively towards Alma. They do this because they see Miss Ralston's response as a threat to their exclusive claim on the activity of carrying water.
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1. torments 2. ravaging 3. nymph 4. relent 5. wrath 6. arrogance 7. int…
1. **Torments** - **Brief Explanations**: - Definition: Great physical or mental suffering. Part - of - speech: Noun. Synonym: Agony. Antonym: Pleasure. Sentence: The torments of …
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now our teacher that year was named miss ralston and even though she ca…
A. stern E. thoughtful
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as used in this passage, what does illuminated mean? to be observed to …
To have light from some source shine on an object
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match each part of the formula with its meaning a: slope; also tell the…
a - slope; also tell the direction that the parabola opens. (Incorrect, it determines opening direction and steepness) h - horizontal movement of the parabola (Correct) k - vertic…
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the water for our school came from a pump at the railway station, which…
Alma's question has a disruptive effect on the rest of the school because it challenges the long - established gender norm of only boys being allowed to carry water, causing surpr…
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fuel efficiency, measured in miles per gallon, is a feature often consi…
point D
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national geographics first, which meant they could spend the rest of re…
D. She feels powerful because she is observing the room from the teacher's view.
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a guidance counselor wants to determine if there is a relationship betw…
This point will increase the value of the standard deviation of the residuals because it has a large negative residual.
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in for formula $y = a(x - h)^2 + k$, the “$-h$” mean that $h$ is negati…
False; that is a subtraction (minus) sign and DOES NOT mean that $h$ is negative
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davon studied the shiny, black virtual reality headset in his hands. th…
B. It shows the importance of family and cultural connections, even in seemingly unrelated situations.
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the two scatter plots below show the same data set. choose the scatter …
# Explanation: ## Paso 1: Identificar el valor atípico Un valor atípico es un dato que se aleja significativamente del resto de los datos en un conjunto de datos. En un diagrama d…
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a statistician at a metal manufacturing plant is sampling the thickness…
B. $20.6$ mm
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write the expression. then, complete the statements. twice the differen…
The word "twice" means $2\times$; The words "the difference of" indicate subtraction; The expression is written as $2(n - 7)$
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here it became apparent that mr. pilkington was about to spring some ca…
- A. Ridicule makes Pilkington seem beneath the animals. - D. Exaggeration makes Pilkington seem ridiculous and similar to the pigs. - E. Satire creates an attitude of contempt fo…
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in the data set below, what are the lower quartile, the median, and the…
# Explicación: ## Paso1: Encontrar la mediana El conjunto de datos tiene $n = 12$ valores. La mediana es el promedio de los valores en las posiciones $\frac{n}{2}$ y $\frac{n}{2}+…
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the stem - and - leaf plot below shows the amount of tips received by t…
The stem does not clearly show the outlier.
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which measure would be the most appropriate to describe the center of t…
mean
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a card is drawn from a standard deck of 52 playing cards. find the prob…
C. $\frac{2}{13}$
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in the data set below, what is the interquartile range? 6 6 1 4 1 1 9 8
6
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mariana is considering a vacation and has obtained high - temperature d…
Miami has less variability in temperatures because its standard deviation (\(s_{M}\approx4.09\)) is less than that of Los Angeles (\(s_{L}\approx5.32\)).
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a) describe the shape of the strength distribution. the distribution is…
a) The shape of the strength distribution is bell - shaped (normal) as it is unimodal, symmetric and has no outliers. b) Without data values, we cannot calculate the exact range. …
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the citizens of a city were asked to choose their favorite type of pet.…
23100
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by visual inspection, determine the best - fitting regression model for…
Linear regression model
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a standard deck of cards contains 51 cards. one card is selected from t…
a. $\frac{1}{2}$ b. $\frac{3}{4}$ c. $\frac{4}{13}$
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5. a standard deck of cards contains 51 cards. one card is selected fro…
a. $\frac{1}{2}$ b. $\frac{3}{4}$ c. $\frac{4}{13}$
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a probability experiment is conducted in which the sample space of the …
No, because the outcome 11 is in both E and F.
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question rewrite in simplest terms: -2k - 7(8k + 4) answer attempt 1 ou…
$-58k - 28$
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read this example of incorrect sentence structure. heavy, black clouds …
Heavy, black clouds rushing in from the horizon, get under cover.
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read the paragraph. spring arrives suddenly. buds appear on the rosebus…
by combining ideas in a complex sentence by combining ideas in a compound sentence by introducing a new idea
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president roosevelt called december 7, 1941, “a date which will live in…
B. dishonor
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which of the following correctly identifies if the statement is true or…
B. false; The base, $-x$, is used as a factor $y$ times. The expression $-x^y$, means the opposite of $x^y$.
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4. he explored one doorway after another, looking for his personal exit…
D. It leads to a conflict between Davon and the other player.
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question 9 of 10 if the r - value, or correlation coefficient, of a dat…
D. 0.857
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question 8 of 10 the residuals for data set a and data set b were calcu…
A. Data set A is not linear, and data set B is linear
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question 7 of 10 if the coefficient of determination for a data set con…
D. 8
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1127. find the product of the monomials. b. $5x^{2}y^{3}cdot(- 2\frac{3…
$-\frac{55}{4}x^{3}y^{9}$ ### Ch.1:123d. Compare the expression to zero
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question 6 of 10 which statement about residual plots is not true? a. t…
A. The x - axis appears in the middle of the graph; B. If there is an obvious pattern, the model is probably reasonable.
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question 5 of 10 what does it mean to say that a data point has a resid…
D. The point lies directly on the regression line.