This quiz: 15 point(s) 30 or both, C B. The population mean, p, is equal to 1. O C. The value of the population standard deviation is not knou V O D. The sample is a simple random sample. This quiz: 15 point(s) Question 3 of 15 possible This question: 1 point(s) possible Submit quiz The IQ scores for a random sample of subjects with low lead levels in their blood and another random sample of n X S subjects with high lead levels in their blood were collected. Low Lead Level H1 |75 93.12127 15.65944 The statistics are summarized in the accompanying table. High Lead Level H2 23 86.26706 8.41255 Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Complete parts (a) to (c) below. . . . State the conclusion for the test. O A. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with low lead levels have higher IQ scores. B. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that subjects with low lead levels have higher IQ scores. O C. Reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with low lead Next Get more help - exampleThis quiz: 15 point(s) Question 3 of 15 possible This question: 1 point(s) possible Submit quiz The IQ scores for a random sample of subjects with low n X lead levels in their blood and another random sample of S subjects with high lead levels in their blood were collected. Low Lead Level My 75 93.12127 15.65944 The statistics are summarized in the accompanying table. SCO . . . High Lead Level H2 23 86.26706 8.41255 Assume that the two samples are independent simple random samples selected from normally distributed ICO populations. Do not assume that the population standard deviations are equal. Complete parts (a) to (c) below. cor . . . b. Construct a confidence interval appropriate for the hypothesis test in part (a).