C mylab.pearson.com/Student/PlayerTest.aspx?testld=241693108¢erwin=yes STAT 200 6379 This quiz: 15 point(s) E Quiz: Quiz #3 Question 13 of 15 This question: 1 point The IQ scores for a random sample of subjects with low lead levels in their blood and another random sample of n S subjects with high lead levels in their blood were collected. The statistics are summarized in the accompanying table. Low Lead Level 78 91.32542 15.34096 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, High Lead Level #2 27 86.70294 9.65244 OA HOMP2 O B. HO H1 SH2 H : 1 1 > H 2 OC. HO- HI -H2 O D. Ho: H1 # H2 Hy : H 1 > H2 The test statistic is (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) State the conclusion for the test. A Reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with low lead levels have higher IQ scores. B. Reject the null hypothesis. There is sufficient evidence to support the claim that subjects with low lead levels have higher IQ scores. C. 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. D. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that subjects with low lead levels have higher IQ scores. b. Construct a confidence interval appropriate for the hypothesis test in part (a) 'Round to one decimal place as needed.) c. Does exposure to lead appear to have an effect on IQ scores? because the confidence interval contains Help me solve this View an example Get more help