PE

Question 1

K Use the Hypothesis Testing: Identify Null and Alternative Hypotheses 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= 0.60 OB. p 2 0.60 O C. p = 0.60 O D. p = 0.60K Claim The mean systolic blood pressure of all healthy adults is less than 121 mm Hg. Sample data: For 281 healthy adults, the mean systolic blood pressure level is 119 94 mm Hy and the standard deviation is 15:23 mm Hg. Complete parts (a) and (b) a. Express the original claim in symbolic form. Let the parameter represent a value with respect to systolic blood pressure of a healthy adult (Type an integer or a decimal. Do not round.) b. Identify the null and alternative hypotheses. Ho HI (Type integers or decimals. Do not round.) 16K Use the Hypothesis Testing Procedure for Hypothesis Tests flow chart interactive to answer the following question. In conducting a hypothesis test of the claim that p > 0.4, the critical value is z = 2.33 and the test statistic is 2.22. Which one of the following is the correct decision stated in nontechnical terms? Choose the correct answer below. A. There is not sufficient evidence to support the claim that p > 0.4 B. There is sufficient evidence to reject the claim that p > 0.4. O c. There is not sufficient evidence to reject the claim that p > 0.4. O D. There is sufficient evidence to support the claim that p > 0.4.Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1166 adults, 85% said that they have a cell phone. Find the value of the test statistic. K The value of the test statistic is (Round to two decimal places as needed.)K Assume a significance level of a = 0.05 and use the given information to complete parts (a) and (b) below. Original claim: Less than 56% of adults would erase all of their personal information online if they could. The hypothesis test results in a P-value of 0.0436. 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 greater than a. O C. Reject Ho because the P-value is greater than a. O D. Fail to reject Ho because the P-value is less than or equal to 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. The percentage of adults that would erase all of their personal information online if they could is less than 56% O B. There is sufficient evidence to support the claim that the percentage of adults that would erase all of their personal information online if they could is less than 56% O C. The percentage of adults that would erase all of their personal information online if they could is more than or equal to 56% O D. There is not sufficient evidence to support the claim that the percentage of adults that would erase all of their personal information online if they could is less than 56%