question #1

Use the data to calculate the sample variance, 52. (Round your answer to five decimal places.) n = 7: 1.2, 3.7, 1.5, 1.9, 3.2, 2.6, 3.0 52: x Construct a 95% confidence interval for the population variance, 02. (Round your answers to two decimal places.) Xto X Test H0: 02 = 0.8 versus Ha: 02 at 0.8 using a: = 0.05. State the test statistic. (Round your answer to two decimal places.) X2 = x State the rejection region. (If the test is onetailed, enter NONE for the unused region. Round your answers to two decimal places.) X2 > none x X2