1.

You wish to test the following claim (Ha) at a significance level of a = 0.01. Hazy, = 57.2 Hazy. 75 57.2 You believe the population is normally distributed and you know the standard deviation is a = 12.6. You obtain a sample mean of M = 55.6 for a sample of size n = 15. What is the critical value for this test? (Report answer accurate to three decimal places.) critical value = :l: C] What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = [:l The test statistic is... A- in the critical region A not in the critical region This test statistic leads to a decision to... A reject the null IAI accept the null A fail to reject the null As such, the final conclusion is that... A There is sufficient evidence to warrant rejection of the claim that the population mean is not equal to 57.2. A There is not sufficient evidence to warrant rejection of the claim that the population mean is not equal to 57.2. A The sample data support the claim that the population mean is not equal to 57.2. A There is not sufficient sample evidence to support the claim that the population mean is not equal to 57.2. You wish to test the following claim (Ha) at a significance level of a = 0.001. Hazy, = 67.1 H0211