STAT200 FINAL EXAM A

In a pulse rate research, a simple random sample of 100 men results in a mean of 80 beats per minute, and a standard deviation of 11 beats per minute. Based on the sample results, the researcher concludes that the pulse rates of men have a standard deviation greater than 10 beats per minutes. Use a 0.05 significance level to test the researchers claim.

a)

STAT200 FINAL EXAM AIdentify the null hypothesis and alternative hypothesis. b)STAT200 FINAL EXAM ADetermine the test statistic. Show all work.

c)

STAT200 FINAL EXAM ADetermine the P-value for this test. Show all work.

d)

STAT200 FINAL EXAM AIs there sufficient evidence to support the researchers claim? Explain