write my assignment 1195

In a pulse rate research, a simple random sample of 40 women 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 women 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, steps formulas

 (c) Determine the P-value for this test. Show all work

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