Listed in the data table are IQ scores for a random sample of subjects with médium lead levels in their bi888. Also isted 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. OA. Ho: #₁ =1₂ H₁: Hy #H₂ what are the null and alternative nypotneses? Assume that population 1 consists or subjects with medium lead levels and population consists of subjects with nign lead levels. OC. Ho: 11 #12 H₁: Hy > H2 C The test statistic is 0.11. (Round to two decimal places as needed.) The P-value is 0.457. (Round to three decimal places as needed.) State the conclusion for the test. OB. Ho: 5₂ Hy: Hy >#₂ Stat D. H₂:14 1₂ H₁: Hy > H₂ 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. OC. Reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. D. 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. 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. 04-20 (Round to two decimal places as needed.)
Listed in the data table are IQ scores for a random sample of subjects with médium lead levels in their bi888. Also isted 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. OA. Ho: #₁ =1₂ H₁: Hy #H₂ what are the null and alternative nypotneses? Assume that population 1 consists or subjects with medium lead levels and population consists of subjects with nign lead levels. OC. Ho: 11 #12 H₁: Hy > H2 C The test statistic is 0.11. (Round to two decimal places as needed.) The P-value is 0.457. (Round to three decimal places as needed.) State the conclusion for the test. OB. Ho: 5₂ Hy: Hy >#₂ Stat D. H₂:14 1₂ H₁: Hy > H₂ 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. OC. Reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores. D. 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. 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. 04-20 (Round to two decimal places as needed.)
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 5CR
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Transcribed Image Text:D
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.
what are the null and alternative nypotneses? Assume that population 1 consists of subjects with medium lead levels and population 2 consists of subjects with nign lead levels.
OA. Ho: M₁ = 1/₂
OB. Ho: 5₂
H₁: Hy > H₂
H₁: Hy #1₂
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OC. Ho: H₁ #1₂
H₁: Hy > H₂
2
The test statistic is 0.11. (Round to two decimal places as needed.)
The P-value is 0.457. (Round to three decimal places as needed.)
State the conclusion for the test.
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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
OC. Reject the null hypothesis. There is not sufficient evidence to support the claim that subjects with medium lead levels have higher IQ scores.
scores.
D. 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.
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.
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Transcribed Image Text:K
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
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are equal. Complete parts (a) and (b) below.
Click the icon to view the data table of IQ scores.
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OA. Ho: H1 H₂
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OC. Ho: Hy #1₂
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The P-value is 0.457.
State the conclusion for
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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.
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