homework mix test # 10

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$d hint: for q i , fraction = which part is the question asking for? out of which whole? group proportion a: inert, mild or no side effects 34.5% b: inert, moderate side effects 9.2% c: inert, severe side effects 6.2% d: drug, mild or no side effects 9.5% e: drug, moderate side effects 12.8% f: drug, severe side effects 27.8%bob’s bookshop clara’s bookshop derek’s bookshop evelyn’s bookshop total monday 14 7 15 12 48 • tuesday 8 13 15 13 49 wednesday 10 13 12 14 49 thursday 8 15 14 10 47 friday 13 7 10 9 39 total 53 55 66 58 232 dr. hunter is overseeing a treatment-resistant influenza phase i trial with 400 healthy partici- pants: half are given the drug and half are given an inert pill. dr. hunter records the severity of gastro- intestinal side effects. of the participants who had severe side …$

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patient spend in non-deep sleep over the course of the entire night? approximately what percent of the participants who were outside a healthy weight range ate break- fast one or fewer times per week? ® 29% ® 51% © 56% © 86% yeast growth over time 40 50 60 70 ho30 009g o 1 lours strain 1 strain 2 a microbiologist compares the growth rates of two yeast strains. she indirectly measures the number of yeast cells by recording the optical density (od600) of each strain every 10 hours. 'j he meas- urements arc presented in the graph shown. based on the data, which of the following statements is false? (a) between hours 30 and 80, strain 1 had a higher od600 reading than strain 2. ® the growth rate of strain 2 was less than the growth rate of strain 1 until hour 50, al which point strain i …

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rd deviation, so his performance was the most consistent. © charles had the largest standard deviation, so his performance was the most consistent. @ brin had the highest score on any one run, so her performance was the most consistent. 7 the average of x and 5 is c, and the average of 3x and 3 is d. what is the average of c and d in terms ofx? . . . ■ - — ■ - • . . . . . : © 2x + 4 hint: for q 10, start with the most definite information. what do you know about the past 11 days? credit card applicants x xx x x x x x x x x — i -------1 i r- i i 1 1 2 3 4 5 6 7 the dot plot shows the number of credit card applicants amara obtained in the past …

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s a valid conclusion? (a) the marketing team has 95% confidence that most college students eat out at least once a week. ® no more than 89.5% of college students eat out at least once a week. @ the percentage of college students who eat out at least once a week is between 82% and 92%. 14 a bottled water company conducts a survey to find out how many bottles of water people consume per day. if a representative and random sample of 500 people is chosen from a population estimated to be 50,000, which of the following accurately describes how the mean of the sample data relates to the esti- mated mean of the entire population? /" ------------------------------ ■ - - - -y (a) the mean of the sample data is equal to the estimated mean of the population. 13 hint: for q13, who is in the survey group? …

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ing dinnerware, of whom 80 percent indicated that at least one piece of dinner- ware was chipped or broken. hint: for q i 7, remember that a valid sample must be unbiased and representative of the larger population. a state politician appears on a local television show to discuss his response to issue x. he asks people to text “1” if they support his response and “2” if they do not. 75% of the texts are is. he concludes that the majority of the state’s residents support his response to issue x. which of the following indicates why the survey results would not allow for a reliable conclusion about the preferences of the entire state? ® the politician did not ask peoples opinions about issue y. which of the following conclusions is best supported by the sample data? ® most of the products returned to the store con- tain chipped …

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d hint: for q i , fraction = which part is the question asking for? out of which whole? group proportion a: inert, mild or no side effects 34.5% b: inert, moderate side effects 9.2% c: inert, severe side effects 6.2% d: drug, mild or no side effects 9.5% e: drug, moderate side effects 12.8% f: drug, severe side effects 27.8%bob’s bookshop clara’s bookshop derek’s bookshop evelyn’s bookshop total monday 14 7 15 12 48 • tuesday 8 13 15 13 49 wednesday 10 13 12 14 49 thursday 8 15 14 10 47 friday 13 7 10 9 39 total 53 55 66 58 232 dr. hunter is overseeing a treatment-resistant influenza phase i trial with 400 healthy partici- …

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