Statistics & Probability
Data analysis, probability distributions, hypothesis testing, and statistical methods.
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at sangers auto garage, three out of every five cars brought in for ser…
\(\frac{12}{35}\)
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read the passage. secret messages often come in the form of carefully w…
It allowed people to send messages with hidden meanings by displaying flowers.
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at a hospital, 56 percent of the babies born are not girls. of the baby…
\(5\%\)
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section 1, module 2: reading and writing text 1 the us film industry ha…
C. By arguing that some franchise movies are indeed surprising
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the following text is from jorge luis borgess 1971 short story \the con…
C. It indicates the narrator's resigned acceptance of his circumstances.
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a box contains four red balls and eight black balls. two balls are rand…
\(P(B)=\frac{2}{3}\), \(P(R|B)=\frac{4}{11}\), \(P(B\cap R)\approx24\%\)
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a dentist polls his patients and finds that 83 percent brush their teet…
23%
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17. which factor is a major advantage of free enterprise (market) econo…
B. greater variety in consumer choice
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determining if events are independent the 154 tenth - graders at wilson…
The probability that a randomly - chosen tenth - grader is male is \(\frac{40}{77}\). The probability that a randomly - chosen tenth - grader is male given that the tenth - grader…
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2. statistics & probability in the venn diagram below, circles s, c, an…
J. 19
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elias writes the numbers 1 through 20 on separate slips of paper. there…
no, because the probability of choosing a yellow slip is not equal to the probability of choosing a yellow slip given an odd number
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what statements are correct? choose three correct answers. the conditio…
The third, fourth, and fifth statements are correct.
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match the words with the descriptions. a. a person learning a trade fro…
3. B. a means of keeping one alive 4. C. one's value of, and dedication to, working hard 5. A. a person learning a trade from a master artisan 6. D. a document that establishes th…
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hobner: what sort of an expression is that to use about our marriage? n…
"I was simply transferred from papa’s hands into yours.", "I had been living here like a poor woman.", "I have existed merely to perform tricks for you.", "It is your fault that I…
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question 5 (1 point) the tax percentage rates within tax brackets often…
Question 5: C. to support legislative actions and government expenditures Question 6: D. almost 48 percent; leading source of revenue to support government spending
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hw 3 - bias in studies identify the type of sampling method used and de…
1. Sampling Method: Convenience sampling; Bias: Under - coverage bias. 2. Sampling Method: Census; Potential Bias: Non - response bias. 3. Sampling Method: Biased experimental des…
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aunt polly asked frank questions that were full of guile, and very deep…
B. Artifices
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1. what are three different ways to analyze data? 2. explain how to cal…
1. Descriptive, inferential, predictive analysis. 2. Sum all data values and divide by the number of values ($\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}$). 3. Simplify complex data, …
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9. the significance level (a) represents: * a. the probability of corre…
- **Pregunta 9**: B. The probability of making a Type I error. - **Pregunta 10**: B. Fail to reject $H_0$; data do not show a significant effect.
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7. if ( p > alpha ), which conclusion is most appropriate? * a. reject …
7. B. Fall to reject \( H_0 \); not enough evidence for \( H_1 \). 8. B. Reject \( H_0 \); the average weight likely differs from 500 g.
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7. if ( p > alpha ), which conclusion is most appropriate? * a. reject …
B. Fall to reject \(H_0\); not enough evidence for \(H_1\). ### 8.
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5. which of the following statements about p - values is correct? * a. …
- **Pregunta 5**: B. The p - value is compared to the significance level (\(\alpha\)) to decide on rejection of \(H_0\). - **Pregunta 6**: C. Reject the null hypothesis; there is …
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question 8 not yet answered marked out of 10.00 flag question in the co…
Activities that are included in the project's objectives
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the following table shows the number of registered voters in three diff…
E. The proportion of voters who are registered Republican in region B is greater than the proportion of voters who are registered Republican in region C.
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the following bar chart shows the number of different types of animals …
D. The percentage of all animals at fair Y that are goats is equal to the percentage of all animals at fair X that are goats.
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#_______ previous answer: 0.4 determine a linear model for the followin…
\(y=-1.08x + 80.07\)
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question 2 not yet answered marked out of 10.00 flag question in the co…
C. Activities that are not included in the project's objectives
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3. a type i error occurs when: * 10 points a. a true null hypothesis is…
3. A. A true null hypothesis is rejected 4. C. A false null hypothesis is not rejected
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1. the null hypothesis (h₀) usually represents which of the following? …
1. B. The claim that nothing has changed or there is no effect 2. C. The claim the researcher is testing for (a difference or effect)
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1. look at this quadratic equation and explain what you think will be t…
1. Quadratic formula is the best approach. 2. \(x=\pm\frac{4}{3}\approx\pm1.33\) (using difference of squares or square - root method). 3. \(x\approx1.73\) and \(x\approx - 0.73\)…
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topic: standing out in a job interview instructions: draw a line connec…
1. Professionalism - f 2. Preparation - d 3. Confidence - b 4. Communication Skills - g 5. Body Language - h 6. Research - a 7. Follow - Up - c 8. Strengths - e
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this graph shows how a saplings height depends on its age. how old was …
8
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in a survey, 11 people gave the following ratings for a local politicia…
None
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a bakery sells 11 types of sandwiches. here are their calorie amounts 2…
\(283\)
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the 10 members of the swim team completed the following numbers of laps…
\(29,156\)
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remind re·mind (verb) paragraph 13) meaning to make someone remorloer s…
Remember; set an alarm; writing a note on my phone, putting a reminder in my calendar, and telling a friend to remind me.
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multiple choice questions name select the correct response for each que…
1. B. The consent of the governed 2. B. That everyone deserves the same political and natural rights 3. C. Rights that cannot be taken away 4. A. To gain respect and understanding…
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question 8 of 10 3000 bce 2500 bce 2000 bce 1500 bce 1000 bce 500 bce 1…
D. They occurred before, because BCE is the same time period as BC, which means "Before Christ."
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what is one effect of the distribution of natural resources in africa? …
D. Countries must trade with each other to get the resources they need.
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list of factors • access to larger markets • more efficient industries …
B. advantages of economic unions.
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what is culture? a the knowledge, attitudes, and behaviors shared by a …
A. the knowledge, attitudes, and behaviors shared by a group
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state proportion of the central american-born population state proporti…
A. Southwest United States
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read the selection, and choose the best answer to each question. the fo…
- Part A: A publication's name displayed on the top of the first page. - Part B: "on the front page"
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a good sense of contentment means that you work hard throughout your li…
F
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read the sentence: the boys hands trembled as he reached for the microp…
C. He's nervous. B. It's unpredictable and frightening.
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when an author includes facts and statistics, their purpose is usually …
- First question: C. Support an idea with proof and numbers - Second question: B. "Over 500 students joined the reading challenge this year."
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mr lowery recorded the number of books each student read for his classs…
The data has a peak at \(8\) books.
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rebecca will roll a standard 6 - sided die. what is the probability tha…
\(\frac{1}{2}\)
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engage them. understanding your audience is key to preparing a presenta…
Sharing personal stories or examples of how social media affects your daily life.
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\only when she was in the motor car did she distinguish the three peopl…
determine
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match each scatterplot shown below with one of the four specified corre…
First scatter - plot: \(a.0.09\) Second scatter - plot: \(d.0.77\) Third scatter - plot: \(b.-0.31\) Fourth scatter - plot: \(c.-0.96\)
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only when she was in the motor car did she distinguish the three people…
determine
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a new york times article titled for runners, soft ground can be hard on…
Because we would be interested in any difference between running on hard and soft surfaces, we should use a two - sided hypothesis test.
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if your claim is in the alternative hypothesis and you fail to reject t…
D. There is not sufficient sample evidence to support the original claim
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practice e11 score: 8/14 answered: 4/7 question 5 if your null and alte…
two tailed
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food inspectors inspect samples of food products to see if they are saf…
type II
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a commonly cited standard for one - way length (duration) of school bus…
The local government decides that the data do not provide convincing evidence of an average commute time higher than 30 minutes, when the true average commute time is in fact high…
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a commonly cited standard for one - way length (duration) of school bus…
\(H_0:\mu = 30;H_A:\mu eq30\) (the third option)
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less than 58% of people support the death penalty. express the null and…
\(H_0:p = 58\%\) \(H_1:p<58\%\)
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there was nothing more appealing to tressa lazars ears than the sound o…
loud and energetic
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how does the interaction between tressa and her grandmother add meaning…
It leads to the resolution of Tressa’s inner conflict because she learns something valuable from her grandmother.
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suppose you are a researcher in a hospital. you are experimenting with …
a. $2.3308$ b. t - distribution c. Because the population standard deviation is unknown and the sample size is small ($n = 13<30$) d. The population must be approximately normal e…
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there was nothing more appealing to tressa lazars ears than the sound o…
loud and energetic
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you must estimate the mean temperature (in degrees fahrenheit) with the…
\((22.91,56.89)\)
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the effectiveness of a blood - pressure drug is being investigated. an …
\(72.3<\mu<73.3\)
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assume that a sample is used to estimate a population mean μ. find the …
\(17.6\)
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suppose you use simple random sampling to select and measure 26 waterme…
\(70\pm3.84\)
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practice e8 score: 2/10 answered: 1/5 question 2 a population has param…
The mean of the distribution of sample means: $147.5$ The standard deviation of the distribution of sample means: $12.28$
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a simple random sample of size n = 40 is obtained from a population wit…
Yes, the sampling distribution is approximately normal because the sample size is greater than 30.
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as part of a statistics project, charlie would like to collect data on …
Both (a) and (c) are correct.
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midterm exam 130 points possible answered: 12/13 question 1 a political…
Size of the sample: 33, Size of the population: 137
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company xyz know that replacement times for the quartz time pieces it p…
\(0.0007\)
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the heights of adult men in america are normally distributed, with a me…
a) \(z\approx1.96\) b) \(z\approx2.59\) c) The 5 foot 11 inch American woman
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here is the setup for a non - traditional casino game: you draw a card …
26
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a group of people were asked if they had run a red light in the last ye…
$0.45$
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which of the below data sets has the lowest standard deviation? you do …
\(0,1,2,3,4,5,6\)
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which is more affected by extreme observations, the mean or median? and…
mean, standard deviation
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the boxplot below shows salaries for cpas and actuaries in a town. cpa …
\(75\)
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130 points possible answered: 5/13 question 6 the boxplot below shows s…
Kosumi
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data was collected for a sample of organic snacks. the amount of sugar …
\(41\)
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find the standard deviation, (sigma), of the data. 16, 13, 20, 16, 12, …
\(2.6\)
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find the standard deviation, \\( \\sigma \\), of the data. 16, 13, 20, …
$2.6$
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find the variance of the data. 16, 13, 20, 16, 12, 17, 18 \\( \\overlin…
\(6.6\)
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find the mean, \\( \\overline { x } \\), of the data. 16, 13, 20, 16, 1…
\(16\)
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find the standard deviation, \\( \\sigma \\), of the data. 465, 460, 49…
\(12.9\)
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find the variance of the data. 465, 460, 497, 462, 462, 474 \\( \\overl…
\(166.3\)
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find the variance of the data. 465, 460, 497, 462, 462, 474 \\( \\overl…
\(166.3\)
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find the mean, $overline{x}$, of the data. 465, 460, 497, 462, 462, 474…
\(470\)
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in one or two sentences, describe how the first - come, first - served …
The first - come, first - served distribution method serves people in the order of their arrival.
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ellen had a bag full of pencils. she gave out one pencil to everyone in…
sharing
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jacob wanted a parking space in a nearby lot. he filled out an applicat…
B. lottery
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question 3 1 pts the social contract is an idea that originated around …
True # Question 4
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find the standard deviation, \\( \\sigma \\), of the data. 251, 224, 23…
$15.2$
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find the variance of the data. 251, 224, 237, 255, 268 \\( \\overline {…
\(230\)
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find the mean, (\bar{x}), of the data. 251, 224, 237, 255, 268 (\bar{x}…
\(247\)
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find the standard deviation, \\( \\sigma \\), of the data. 16, 31, 38, …
$8.1$
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find the variance of the data. 16, 31, 38, 24, 36 \\( \\overline { x } …
\(65.6\)
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find the mean, $overline{x}$, of the data. 16, 31, 38, 24, 36 $overline…
\(29\)
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the sentence below from the section fliens and slang helps prove the cl…
C. The word "rhubarb" was taken over by baseball players to mean a noisy argument.
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find the standard deviation, (sigma), of the data. 56, 52, 46, 49, 57, …
$5.9$