FOR RIMA MAKENZIE ONLY!!!

In apulse rate research, a simple random sample of 40 men results in a mean of 80 beats per minute, and a standard deviation of 11.3 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 researcher’s claim. 

(a)               Identify the null hypothesis and alternative hypothesis.

(b)               Determine the test statistic.  Show all work; writing the correct test statistic, without supporting work, will receive no credit.  

(c)               Determine the P-value for this test.  Show all work; writing the correct P-value, without supporting work, will receive no credit.   

(d)               Is there sufficient evidence to support the researcher’s claim? Explain.