# Question

A random sample of seven measurements gave x = 9.4 and σ2 = 1.84.

a. What assumptions must you make concerning the population in order to test a hypothesis about σ2?

b. Suppose the assumptions in part a are satisfied. Test the null hypothesis σ2 = 1 against the alternative hypothesis σ2 > 1. Use α = .05.

c. Refer to part b. Suppose the test statistic is x2 = 14.45. Use Table VII of Appendix A to find the approximate p-value of the test.

d. Test the null hypothesis s2 = 1 against the alternative hypothesis s2 ≠1. Use α = .05

a. What assumptions must you make concerning the population in order to test a hypothesis about σ2?

b. Suppose the assumptions in part a are satisfied. Test the null hypothesis σ2 = 1 against the alternative hypothesis σ2 > 1. Use α = .05.

c. Refer to part b. Suppose the test statistic is x2 = 14.45. Use Table VII of Appendix A to find the approximate p-value of the test.

d. Test the null hypothesis s2 = 1 against the alternative hypothesis s2 ≠1. Use α = .05

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