QUESTION 8 The Wechsler IQ test is designed so that the mean is 100 and the standard deviation is 15 for the population of normal adults. Listed below are IQ scores of randomly selected professional pilots. It is claimed that because professional pilots are a more homogeneous group than the general population, they have IQ scores with a standard deviation less than 15. Test that claim using a 0.05 si nicance level. |121 |115 |115 |121 I116 |107 |127 98 I116 |101 |130 |114 Identify the test statistic, P -va|ue or critical value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Assume that a simple random sample is selected from a normally distributed population. 0 Test statistic: 2'2 :1235 , critical values: 22 = 4575, pvalue 0.02, fail to reject H0 1 points Save Answer QUESTION 7 1 points Save Answer A data set includes a sample of 106 body temperatures with a mean of 98.20F and a standard deviation of 0.62F. Use a 0.05 significance level to test the claim that the mean body temperature of the population is equal to 98.6F, as is commonly believed. Use the P -va|ue method and the critical value method for testing the hypothesis. Identify the test statistic, P va|ue , critical value and the final conclusion that address the original claim. 0 Test statistic: t = 0321, critical values: I = i1_201, P value >0.20, fail to reject HO 0 Test statistic: = -6542 , critical values (approx.): 1 = $1984, P - value 0.02, fail to reject HO 0 Test statistic: t g -6542 , critical values: I: $2.101: P - value