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Listed in the data table are 1Q scores for a random sample of subjects with medium lead levels in their blood, Also listed are statistics from a study done of IQ scores for a random sample of subjects levels. 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. Com (b) below. E Click the icon to view the data table of IQ scores. '1. 1 P2 O C. Ho: H1 =#2 H,: H1 > H2 O D. Ho: H1 SH2 H: H1 > H2 The test statistic is. (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.)

Listed in the data table are 1Q scores for a random sample of subjects with medium lead levels in their blood, Also listed are statistics from a study done of IQ scores for a random sample of subjects levels. 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. Com (b) below. E Click the icon to view the data table of IQ scores. '1. 1 P2 O C. Ho: H1 =#2 H,: H1 > H2 O D. Ho: H1 SH2 H: H1 > H2 The test statistic is. (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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res Medium Lead Level DHigh Lead Level 72 n2 = 11 85 92 X2 = 89.731 85 90 $2 = 9.764 97 83 92 97 111 91
Transcribed Image Text:res Medium Lead Level DHigh Lead Level 72 n2 = 11 85 92 X2 = 89.731 85 90 $2 = 9.764 97 83 92 97 111 91
Listed in the data table are 1Q scores for a random sample of subjects with medium lead levels in their blood. Also listed are statistics from a study done of IQ scores for a random sample of subjects with high lead levels. 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) and (b) below. E Click the icon to view the data table of IQ scores. '1. 1 P2 י" ןי ידי OC. Ho: H1 = H2 H1: H1> H2 OD. Ho: H1 SH2 H: H1> 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. O A. Fail to reject the null hypothesis. There is sufficient evidence to support claim that subjects with medium lead levels have higher IQ scores. O B. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. O C. Reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. O D. Reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. b. Construct'a confidence interval suitable for testing the claim that the mean IQ scores for subjects with medium lead levels is higher than the mean for subjects with high lead levels. (Round to two decimal places as needed.) Does the confidence interval support the conclusion of the test? V because the confidence interval contains
Transcribed Image Text:Listed in the data table are 1Q scores for a random sample of subjects with medium lead levels in their blood. Also listed are statistics from a study done of IQ scores for a random sample of subjects with high lead levels. 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) and (b) below. E Click the icon to view the data table of IQ scores. '1. 1 P2 י" ןי ידי OC. Ho: H1 = H2 H1: H1> H2 OD. Ho: H1 SH2 H: H1> 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. O A. Fail to reject the null hypothesis. There is sufficient evidence to support claim that subjects with medium lead levels have higher IQ scores. O B. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. O C. Reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. O D. Reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. b. Construct'a confidence interval suitable for testing the claim that the mean IQ scores for subjects with medium lead levels is higher than the mean for subjects with high lead levels. (Round to two decimal places as needed.) Does the confidence interval support the conclusion of the test? V because the confidence interval contains
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