= Test: Final Test (Chapter 7 & 8 & 10) Question 1 of 28 This test: 28 point(s) possible This question: 1 point(s) possible Submit test Use the Hypothesis Testing flow chart interactive to answer the following question. Given the claim that "at least 60% of adults vote," which of the following is the symbolic form of the null hypothesis Ho? Choose the correct answer below. O A. p 0.8. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-value. c. Using a significance level of a = 0.01, should we reject Ho or should we fail to reject Ho? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. a. This is a test. b. P-value = (Round to three decimal places as needed.) c. Choose the correct conclusion below. O A. Reject Ho. There is sufficient evidence to support the claim that p > 0.8. O B. Reject Ho. There is not sufficient evidence to support the claim that p > 0.8. O C. Fail to reject Ho. There is sufficient evidence to support the claim that p > 0.8. O D. Fail to reject Ho. There is not sufficient evidence to support the claim that p > 0.8.Test: Final Test (Chapter 7 & 8 & 10) Question 6 of 28 This test: 28 point(s) possible This question: 1 point(s) possible Submit test The test statistic of z = 1.56 is obtained when testing the claim that p > 0.8. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-value. c. Using a significance level of a = 0.01, should we reject Ho or should we fail to reject Ho ? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. a. This is a test. b. P-value = ecimal places as needed.) c. Choose t elow. two-tailed O A. Reje int evidence to support the claim that p > 0.8. right-tailed O B. Reje ficient evidence to support the claim that p > 0.8. left-tailed O C. Fail sufficient evidence to support the claim that p > 0.8. O D. Fail to reject Ho. There is not sufficient evidence to support the claim that p > 0.8.= Test: Final Test (Chapter 7 & 8 & 10) Question 7 of 28 This test: 28 point(s) possible This question: 1 point(s) possible Submit test The test statistic of z = - 1.85 is obtained when testing the claim that p # 0.593. This is a two-tailed test. Using a 0.01 significance level, complete parts (a) and (b). Click here to view the standard normal distribution table for negative z scores. Click here to view the standard normal distribution table for positive z scores a. Find the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) O A. There is one critical value; the critical value is B. There are two critical values; the lower critical value is and the upper critical value is b. Should we reject Ho or should we fail to reject Ho? O A. Ho should be rejected, since the test statistic is in the critical region. O B. Ho should not be rejected, since the test statistic is in the critical region. O C. Ho should not be rejected, since the test statistic is not in the critical region. O D. Ho should be rejected, since the test statistic is not in the critical region.Test: Final Test (Chapter 7 & 8 & 10) Question 8 of 28 This test: 28 point(s) possible This question: 1 point(s) possible Submit test Use the sample data and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2670 subjects randomly selected from an online group involved with ears. 1092 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E=] (Round to three decimal places as needed.) c) Construct the confidence interval.

0.20 O C. Ho: p = 0.20 H1: p 0.20 H1 : p= 0.20 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is]. (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. O A. Fail to reject Ho. There is not sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. O B. Reject Ho. There is not sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. O C. Fail to reject Ho. There is sufficient evidence to warrant support of the claim that more than 20% of users develop nausea. O D. Reject Ho. There is sufficient evidence to warrant support of the claim that more than 20% of users develop nausea.= Test: Final Test (Chapter 7 & 8 & 10) Question 12 of 28 This test: 28 point(s) possible This question: 1 point(s) possible ko Submit Which of the following is NOT a true statement about error in hypothesis testing? Choose the correct answer below. A. A type I error is making the mistake of rejecting the null hypothesis when it is actually true. O B. A type I error is making the mistake of rejecting the null hypothesis when it is actually false. C. A type II error is making the mistake of failing to reject the null hypothesis when it is actually false. O D. The symbol a represents the probability of a type I error.E Test: Final Test (Chapter 7 a 8 a 10) Question 13 of 23 > \"\"5 \"st 28 minis) PSSib'e This question: 1 point(s) possible Fill in the blank. The of a hypothesis test is the probability (1 [1) of rejecting a false null hypothesis. The E of a hypothesis test is the probability (1 - [3) of rejecting a false null hypothesis. power P-value decision conclusion E Test: Final Test (Chapter 7 a a & 10) Question 14 of 28 > "\"5\"\": 28 WW) pm\" 8;: Submit test This question: 1 point(s) possible The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to rst determine the percentage of adults who have heard at the brand. How many adults must he survey in order to be 80% condent that his estimate is within ve percentage points of the true population percentage? Complete parts (a) through (0) below. a) Assume that nothing is known about the percentage of aduls who have heard of the brand. n = (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 82% of adults have heard of the brand. n = (Round up to the nearest integer.) c) Given that the required sample size is relatively small, oould he simply survey the adults at the nearest college? 0 A. No, a sample of students at the nearest college is a cluster sample. not a simple random sample, so it is very possible that the results would not be representative of the population of adults. 0 B. No. a sample of students at the nearest college is a convenience sample. not a simple random sample. so it is very possible that the results would not be representative of the population of adults. 0 C. Yes. a sample 0! students at the nearest college is a simple random sample, so the results should be representative of the population of adults. 0 D. No, a sample of students at the nearest college is a stratied sample, not a simple random sample, so it is very possible that the results would not be representative of the population 0! adults. E Test: Final Test (Chapter 7 & 8 & 10) Question 15 of 28 This test: 28 point(s) possible This question: 1 point(s) possible Submit test Assume a significance level of a = 0.01 and use the given information to complete parts (a) and (b) below. Original claim: The mean pulse rate (in beats per minute) of a certain group of adult males is 72 bpm. The hypothesis test results in a P-value of 0.0774. a. State a conclusion about the null hypothesis. (Reject Ho or fail to reject Ho.) Choose the correct answer below. O A. Reject Ho because the P-value is less than or equal to a. O B. Fail to reject Ho because the P-value is less than or equal to a. O C. Fail to reject Ho because the P-value is greater than a. O D. Reject Ho because the P-value is greater than a. b. Without using technical terms, state a final conclusion that addresses the original claim. Which of the following is the correct conclusion? O A. There is sufficient evidence to warrant rejection of the claim that the mean pulse rate (in beats per minute) of the group of adult males is 72 bpm. O B. The mean pulse rate (in beats per minute) of the group of adult males is 72 bpm. O C. The mean pulse rate (in beats per minute) of the group of adult males is not 72 bpm. O D. There is not sufficient evidence to warrant rejection of the claim that the mean pulse rate (in beats per minute) of the group of adult males is 72 bpm.This test: 28 point(s) possible This question: 1 polnt(s) possible = Test: Final Test (Chapter 7 & 8 & 10) Question 20 of 28 Submit test Fill in the blank. A exists between two variables when the values of one variable are somehow associated with the values of the other variable, A E exists between two variables when the values of one variable are somehow associated with the values of the other variable. difference inference trial correlation This test: 28 point(s) possible @ This question: 1 pelnt(s) possible E Test: Final Test (Chapter 7 & 8 & 10) Question 21 of 28 Submit test Claim: Fewer than 95% 0! adults have a cell phone, In a reputable poll 0! 1236 adults, 87% said that they have a cell phone. Find the value of the test statistic, The value of the test statistic is , (Round to two decimal places as needed,) Test: Final Test (Chapter 7 & 8 & 10) Question 22 of 28 This test: 28 point(s) possible This question: 1 point(s) possible Submit test Next question Express the confidence interval (0.013,0.109) in the form of p - E

"\"5 \"5': 28 \"mm \"35\"\" (:33 Submit test This question: 1 point(s) possible Use the P-Value Method flow chart interactive to answer the (allowing question. In concluding a hypothesis test, the signicanoe level is 001 and it is found that the P-value is {most Which one of the following is the correct decision? r Choose the correct answer below. 0 A. Fail to reject HO. O B. Reject Hot 0 c. Reject HT 0 D. Fail to reject H1l : Test: Final Test (Chapter 7 & 8 & 10) Question 25 of 28 This test: 28 point(s) possible This question: 1 point(s) possible Submit test A certain drug is used to treat asthma. In a clinical trial of the drug, 22 of 285 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 9% of treated subjects experienced headaches. Use the normal distribution as an -PropZTest approximation to the binomial distribution and assume a 0.01 significance level to complete parts (a) through (e) below. prop 0.09 O B. Ho: P