MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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I NEED PART B

Listed in the data table are IQ 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. Click the icon to view the data table of IQ scores. a. Use a 0.01 significance level to test the claim that the mean IQ scores for subjects with medium lead levels is higher than the mean for subjects with high lead levels. What are the null and alternative hypotheses? Assume that population 1 consists of subjects with medium lead levels and population 2 consists of subjects with high lead leve IQ scores O A. Ho: H1 #H2 OB. Ho: H1= H2 H H1H2 Medium Lead Level High Lead Level C. Ho: H1 SH2 o Ho H1 H2 H: Hy>Hz 72 n2 = 11 96 H:H>H2 92 X2 = 89.003 %3D 85 The test statistic is 0.41. (Round to two decimal places as needed.) 84 S2 = 9.752 97 The P-value is 0.343 (Round to three decimal places as needed.) 83 92 State the conclusion for the test. 95 111 91 O A. Reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. O B. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium 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 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, Print Done 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 lea _
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Transcribed Image Text:Listed in the data table are IQ 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. Click the icon to view the data table of IQ scores. a. Use a 0.01 significance level to test the claim that the mean IQ scores for subjects with medium lead levels is higher than the mean for subjects with high lead levels. What are the null and alternative hypotheses? Assume that population 1 consists of subjects with medium lead levels and population 2 consists of subjects with high lead leve IQ scores O A. Ho: H1 #H2 OB. Ho: H1= H2 H H1H2 Medium Lead Level High Lead Level C. Ho: H1 SH2 o Ho H1 H2 H: Hy>Hz 72 n2 = 11 96 H:H>H2 92 X2 = 89.003 %3D 85 The test statistic is 0.41. (Round to two decimal places as needed.) 84 S2 = 9.752 97 The P-value is 0.343 (Round to three decimal places as needed.) 83 92 State the conclusion for the test. 95 111 91 O A. Reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. O B. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium 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 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, Print Done 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 lea _
Listed in the data table are IQ 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 subied 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) belo E Click the icon to view the data table of IQ scores. VVI IJI YE VI JUI O A Ho Hy # H2 O B. Ho P1 = P2 c. . Ho H1 SH2 D. Ho: -H2 H: > P2 The test statistic is 0.41. (Round to two decimal places as needed.) The P-value is 0.343. (Round to three decimal places as needed.) State the conclusion for the test. OA Reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. OB. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium 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 medium lead levels have higher IQ scores. OD. 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.)
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Transcribed Image Text:Listed in the data table are IQ 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 subied 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) belo E Click the icon to view the data table of IQ scores. VVI IJI YE VI JUI O A Ho Hy # H2 O B. Ho P1 = P2 c. . Ho H1 SH2 D. Ho: -H2 H: > P2 The test statistic is 0.41. (Round to two decimal places as needed.) The P-value is 0.343. (Round to three decimal places as needed.) State the conclusion for the test. OA Reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. OB. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that subjects with medium 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 medium lead levels have higher IQ scores. OD. 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.)
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