A simple random sample of 43 men from a normally distributed population results in a standard deviatión of 7.6 beats per minute. The normal range of pulse rates of adults is typically giver as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.05 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute. Complete parts (a) through (d) below. a. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: o2 10 beats per minute O B. Ho: o= 10 beats per minute H:o< 10 beats per minute H,:o< 10 beats per minute O C. Ho: o+ 10 beats per minute D. Ho: o = 10 beats per minute H,:0 = 10 beats per minute H,: o# 10 beats per minute b. Compute the test statistic. (Round to three decimal places as needed.)

O Macmillan Learning A randomly sampled group of patients at a major U.S. regional hospital became part of a nutrition study on dietary habits. Part of the study consisted of a 50-question survey asking about types of foods consumed. Each question was scored on a scale from one: most unhealthy behavior, to five: most healthy behavior. The answers were summed and averaged. The population of interest is the patients at the regional hospital. A prior study conducted at the hospital showed that averaging scores over 50 questions produces a Normal population distribution. If we obtain a sample of n = 15 subjects and wish to calculate a 95% confidence interval, the critical value t* is: O 1.753. O2.145. O 1.761. O 2.131.

S Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 998 and x = 522 who said "yes." Use a 99% confide 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.) n example Get more help -

In a hypothesis test, H0 is p < 0.45 and Ha is p > 0.45. If the test statistic is z = 1.68, what is the P-value? Draw picture and give P-value only. Do not do rest of testing.