Statistics & Probability
Data analysis, probability distributions, hypothesis testing, and statistical methods.
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some research suggests that first born children may have higher iq scor…
A. $H_0:\mu_d = 0$, $H_a:\mu_d>0$
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the poetry of emily dickinson which pair of words forms a slant rhyme? …
D. all of the above
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question 2 the local power company is testing a new type of thermostat …
A. Paired T - Test Sample N Mean StDev SE Mean Before 35 8 1.4142136 0.23904572 After 35 7.5714286 1.6140143 0.2728182 Differences 35 0.42857143 0.77784447 0.13147971 T - test of …
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a teacher is experimenting with a new computer - based instruction and …
A. The teacher gives each student in the class a pretest. Then she teaches a lesson using a computer program. Afterwards, she gives each student a post - test. The teacher wants t…
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question 6 you are analyzing data for a research project. you have a tw…
A. 95% confidence interval: $(-3.853,-0.943)$
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how many roots do the functions have in common? (roots, zeros, solution…
f and g share the same roots
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do oddsmakers believe that teams who play at home will have home field …
D. The data do not provide sufficient evidence to reject $H_0$; thus, we cannot conclude that the mean point spread of home games is higher than that of away games.
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do college students who are in a fraternity or sorority attend more par…
D. $H_0:\mu_1=\mu_2$, $H_a:\mu_1>\mu_2$
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college students and drinking habits: a public health official is study…
A. The samples provide significant evidence that students at University 1 drink more than students at University 2.
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question 4 suppose the results indicate that the null hypothesis should…
A. Increase the sample size.
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question 3 suppose the results indicate that the null hypothesis should…
B. Choose a 0.01 significance level instead of a 0.05 significance level.
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a marketing consulting group wants to see whether placing a seasonal co…
B. Type II
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an automatic coffee machine dispenses cups of coffee whose volume per c…
A. One - Sample T Test of $\mu = 10$ vs $<10$ N Mean StDev SE Mean 95% Upper Bound T P 8 9.92000 0.23000 0.08132 10.07406 - 0.98 0.179
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question 3 which of the following facts about the p - value of a test i…
B. A p - value smaller than the significance level provides enough evidence to reject $H_0$.
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education researchers conducted a study in order to estimate μ, the mea…
A. The current study does provide significant evidence that the mean number of weekly hours has changed over the past year, since 6 falls outside the confidence interval.
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the wechsler adult intelligence scale (iq test) is constructed so that …
D. $H_0: \mu = 100; H_a: \mu>100$
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question 2 according to facebooks self - reported statistics, the avera…
C. Mean number of Facebook friends for CCC students
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part a read the sentence from paragraph 13. within seconds, the enormou…
Part A: B. giant Part B: C. swallowed
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in 2013, the average girl scout in new york city sold 96 boxes of cooki…
C. Mean number of boxes of cookies sold for the Girl Scouts in Troop 5078
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read aras rebuttal from an argumentative essay. while it is true that c…
Statistics about how many hours teenagers need to sleep Statistics about the sleeping habits of high school students Information about the effects of sleep deprivation on teenagers
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read the sentence from paragraph 2. storms just off the coast could bri…
D. not usual
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the two box plots represent the total number of touchdowns two quarterb…
Mike threw more touchdowns in one season. Mike had a greater variation of the total number of touchdowns each season. The differences in the medians and positions of the boxes sho…
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question 10 of 10 what is the difference between a common item you can …
C. The artistic sponge has meaning.
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question 8 of 10 match each step of the art critique process with the m…
Identify - What do you see? Interpret - Who did it? When? What is it? Describe - What does it mean? Judge - Do you like it? Why?
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the box plots display the same data set for the number of touchdowns a …
The outlier of the data set is 5. The range of the data set including the outlier as the minimum is 10 more than the one excluding the outlier as the minimum. The outlier had the …
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for the compound - interest formula, $a = p(1+\frac{r}{n})^{nt}$, match…
A. amount of money accumulated P. principal amount r. annual interest rate n. number of times that interest is compounded per year t. time in years
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construct a box plot to represent the ages of the actors in a play. ste…
18, 24, 24, 25, 26, 28, 30, 32, 33, 44
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use the drop - down menus to identify the key values of the box plot. t…
The median is C. The minimum is A. The maximum is E. The lower quartile ($Q_1$) is B. The upper quartile ($Q_3$) is D.
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10. buffy is choosing people for her volleyball team in gym class. ther…
$\frac{14}{32}\times\frac{13}{31}=\frac{182}{992}=\frac{91}{496}$
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which data set has an outlier? 25, 36, 44, 51, 62, 77 3, 3, 3, 7, 9, 9,…
8, 17, 18, 20, 20, 21, 23, 26, 31, 39
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which of these sentences correctly and effectively incorporates source …
D. In his Time magazine article, "The Upside of Being an Introvert," Bryan Walsh sets forth one of the strengths that introverts can bring to the workplace: "Introverts are more c…
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the data set below represents the total number of touchdowns a quarterb…
The range is 24 touchdowns. The interquartile range is 8 touchdowns.
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how are prefixes and suffixes alike? select two options. both are a typ…
A. Both are a type of affix. C. Both can change a word's meaning.
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read the excerpt from act 1, scene 3, of the tragedy of julius caesar a…
Alluding to Pompey invokes the history of his opposition to Caesar, showing that the conspirators in the play are part of a long - standing battle against a tyrant.
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secured loans and unsecured loans use what you have learned about secur…
1. a secured loan 2. an unsecured loan 3. a secured loan
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read the passage from a raisin in the sun. mama (to walter): son—(she g…
Unintentional betrayal can lead to severe consequences.
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find the error avery wants to order new practice t - shirts for her soc…
Avery's mistake is that she thought a steeper graph meant a lower cost. In fact, a steeper graph in this context means a higher unit cost. The shirts will cost less from Shirts No…
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tristan records the number of customers who visit the store each hour o…
C. 20
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ms. monroe mixes 200 cubes of 4 different colors for a project. she the…
The mean number of red cubes is more than the median number of red cubes.
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brooke has scores of 84, 72, 90, 95, and 87 on her first five quizzes. …
B. 90, D. 86, F. 92
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there are 8 sophomores on the academic team. at the last competition, t…
A. 79%
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the graph shows the number of minutes, to the nearest five minutes, tha…
The mean will decrease, and the median will stay the same.
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the table shows the heights, in inches, of players on a girls basketbal…
69
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here is a data set: (lesson 1 - 12) 5 10 10 10 15 100 a. after studying…
a. The mean decreases from \(25\) to approximately \(10.83\) and the standard deviation decreases. b. The median is a better measure of the center because the data set has an out …
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justifying a better measure of center explain when the median of a data…
The median is a better measure of center than the mean when the data set contains outliers or is skewed.
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question 39: the basic unit of spoken sound in a language is a(n) _____…
Question 39: The basic unit of spoken sound in a language is a phoneme while the smallest unit of meaning in a language is a morpheme. Question 40: Divergent thinking is thinking …
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question 33: a(an) ____ is a basic sound unit of a given language. opti…
Question 33: C. phoneme Question 34: C. interpretation Question 35: No correct option among the given ones
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which sentence from the passage is an example of an opinion disguised a…
"Compelling students to dress alike suppresses the diversity that our schools should be promoting." (paragraph 7)
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donna and mary both have the skills to produce baskets. donnas opportun…
Donna has a comparative advantage in the production of baskets.
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here is a data set: (lesson 1 - 12) 5 10 10 10 15 100 a. after studying…
The mean decreases from 25 to approximately 10.83 and the standard deviation decreases.
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for which data representation is the median the better measure of cente…
The data representation with skewness or outliers (e.g., a long - tailed distribution)
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the data set 80, 84, 79, 44, 87, 73, 89, 90, 82, 89, 93, 97, 77, and 71…
What type of distribution is this? Symmetric What is the mean? Approximately 80.36 What is the median? 83 Which measure of center is the best choice for this data set? Mean
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match the rhetorical devices to their definitions. (6 points) 1. a figu…
1. a. Antithesis 2. c. Zeugma 3. d. Metonymy 4. b. Asyndeton 5. e. Synecdoche 6. f. Irony
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read the following quote: \the opposite of love is not hate, its indiff…
It should be directly quoted because the language is especially thought - provoking.
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choose the correct answer. ___ are used to organize complicated data in…
Tables
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what do you think millicent will say to the sorority sisters? write dia…
Millicent: "Well, that was quite the experience! I'm just glad it's over. But now, what does being a part of this sorority really mean?"
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read this sentence. the poet likes to transpose words which can confuse…
B. to reverse the usual order
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has a lot fewer customers. \one example of rebranding is dunkin’ donuts…
The expert quoted in the article works for the company she praised and does not work for the company she criticized.
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in paragraph 1 of the passage, what is the meaning of the word luster? …
B. shine
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laras chewing misophonia is so strong that she hasnt been inside a rest…
C. disgust of a particular noise
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according to the los angeles times, speed limits on california highways…
The speed limit is set at the value that will have 85% of the vehicles on that road traveling at a speed less than the speed limit.
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the dotplot shows the heights (in inches) of the 25 students in mrs. na…
(a) 20 (b) Asher's height is greater than 88% of the 25 students in Mrs. Nataro's statistics class. Asher is 74 inches tall.
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the dot - plot shows the heights (in inches) of the 25 students in mrs.…
(a) 20 (b) Asher's height is greater than 88% of the 25 students in Mrs. Nataro's statistics class. Asher is 74 inches tall.
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a professor had students keep track of their social interactions for a …
4
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read the excerpt from the role of social media in the arab uprisings by…
A. data showing the widespread use of social media in countries involved in the uprisings C. statistics that describe Egyptians' use of the internet and social media during the up…
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choose the answer that means the same as the word flashed. think carefu…
without change
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jorges score on exam 1 in his statistics class was at the 64th percenti…
between the median and the third quartile.
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according to the world health organization (who), body mass index (bmi)…
$24.9$
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choose the answer that means the same as the word associate. think care…
link or join together
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determine whether the statement is true or false. if the statement is f…
D. False. One advantage of a stem - and - leaf plot is that it displays the data items.
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determine whether the following statement is true or false. if the stat…
D. The statement is true because people choose to call in. They are not randomly selected.
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3. part a: what is the meaning of \tribulation\ in paragraph 14? a. adv…
C. difficulty
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determine whether the statement is true or false. if the statement is f…
C. False. A population is the set of all the people or objects whose properties are to be described and analyzed by the data collector.
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fill in the blank so that the resulting statement is true. a data prese…
stem - and - leaf plot
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because clark, a junior at metropolis high, sleeps in math class, stude…
D. 0.4 hours
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fill in the blank so that the resulting statement is true. if the midpo…
First blank: frequency - polygon Second blank: horizontal axis
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fill in each blank so that the resulting statement is true. data can be…
histogram; frequency
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fill in the blank so that the resulting statement is true. suppose a da…
grouped frequency distribution, 80, 89
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fatima conducted an experiment where she asked people to estimate the t…
$0.75$
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choose the answer that means the same as the word seldom. think careful…
B. rarely
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which statement is true? the president pro tempore gives the final vote…
H.R. significa un proyecto de ley de la Cámara de Representantes y S. un proyecto de ley del Senado.
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treak, a 4 week streak and counting! fan... find out about it and learn…
C. to provide context that emphasizes the importance of Sune's conclusions
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peter is a star runner on the track team. in the league championship me…
Peter's time was faster than 80% of his previous race times that season, but it was faster than only 50% of the racers at the league championship meet. Peter must not be a very go…
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why does obama describe the holocausts victims before discussing what c…
C. Obama's descriptions of the human cost of the Holocaust serve to make clear the human stakes if current and future generations fail to remember, teach, and take action.
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which detail from the text best supports the claim that the use of mors…
D. "After hearing Phillips's distress signals, Cottam relayed the message to his captain, who immediately turned the Carpathia northward."
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several reasons. when spanish conquerors invaded andean regions in the …
A. The Spanish conquest and loss of the knowledge about the khipu have created challenges for scholars hoping to determine the khipu's purpose.
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the stemplot shows the percentages of residents aged 65 and older in th…
8th percentile
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the boxplot below shows the number of jobs that a sample of people had …
| Min | Q1 | Median | Q3 | Max | | ---- | ---- | ---- | ---- | ---- | | 5.0 | 6.5 | 8.5 | 10.5 | 14.0 |
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which statements describe characteristics of allegory? select three opt…
- It comments on an abstract theory or historical event. - It occurs throughout the entire length of a story. - It contains meanings of social or political significance.
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how does wilde develop lord henrys character in this excerpt? choose 1 …
B. Wilde uses Lord Henry's clever statements to reveal deeper insights about life, suggesting that beneath Lord Henry's casual remarks lies a profound desire to understand life's …
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many athletes (and their parents) worry about the risk of concussions w…
A. 24 inches
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giving a test to a group of students, the grades and if they were a bus…
$\frac{36}{71}\approx0.5070$
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22. how does an individuals credit history affect the ability to purcha…
B. A higher credit score makes it easier to obtain a mortgage and results in lower interest rates.
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language practice 5. who’s the storyteller? can you believe it? there i…
The tree is the storyteller.
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during the 2019 season, the mean number of wins for major league baseba…
(a) $z\approx0.75$ (b) The Washington Nationals number of wins in 2019 is 0.75 standard deviations above the mean of 81 wins.
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events a and b are independent. find the indicated probability. p(a) = …
$0.4$
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in the 1920s, many people bought stock on margin, which means they - a.…
D. paid for a small percentage of the stock and borrowed the remaining amount from brokers and banks.
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suppose that 18% of people own dogs. if you pick two people at random, …
$0.032$
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suppose the average travel time for an employee at waterman electric is…
No, because 5 minutes is less than two standard deviations below the mean.
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according to a study by nielsen mobile, \teenagers 13 to 17 are by far …
The number of texts sent by Alejandro is 1.89 standard deviations above the mean number of texts sent by the students in the sample.