**Unformatted text preview: **0.5 inches or less. To test their claim, a random sample of 17 six-foot boards is selected; and it is determined that the standard deviation of the sample is 0.43. Do the results of the sample support the company's claim? Use a = 0.1. ANSWER: Since c 2 = 11.83 < 23.54, do not reject Ho. 6. At a = 0.1, test to see if the population variances from which the following samples were drawn are equal. Group 1 Group 2 n 1 = 21 n 2 = 19 s 1 = 18 s 2 = 16 ANSWER: Since F = 1.26 < 2.19, do not reject Ho. 7. The standard deviation of the ages of a sample of 16 executives from the northern states was 8.2 years; while the standard deviation of the ages of a sample of 25 executives from the southern states was 12.8 years. At a = 0.1, test to see if there is any difference in the standard deviations of the ages of all the northern and southern executives. ANSWER: Since F = 2.44 > 2.29, reject Ho....

View
Full Document