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. O Click the icon to view the data table of 1Q scores. a. Use a 0.05 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 levels. Question A H "P2 OB. H H SH2 H: H 2 OC H H2 OD. H "2 The test statistic is 0.28 (Round to two decimal places as needed.) The P-value is 0.389. (Round to three decimal places as needed.) State the conclusion for the test.
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. O Click the icon to view the data table of 1Q scores. a. Use a 0.05 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 levels. Question A H "P2 OB. H H SH2 H: H 2 OC H H2 OD. H "2 The test statistic is 0.28 (Round to two decimal places as needed.) The P-value is 0.389. (Round to three decimal places as needed.) State the conclusion for the test.
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Transcribed Image Text:Phomeworkld%3611562314&questionld%3D1&flushed%3Dfalse&cld%3D6725222¢erwin=Dyes
leidy correa
Question 1, 9.2.12-T
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O Points: 0.75 of 1
Part 5 of 6
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90
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85
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87
high lead levels
S2 = 10.391
97
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92
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leidy correa pabon &| 12/03/21 11:42 AM
Question 1, 9.2.12-T
E Homework: HW 9,2
HW Score: 9.38%, 0.75 of 8 points
O Points: 0.75 of 1
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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)
d(b) below.
E Click the icon to view the data table of IQ scores.
a. Use a 0.05 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 levels.
Question
OB. Ho: H, SH
H,: P2
OC. Ho P 2
H 2
O D. H: H "H2
H H, 2
The test statistic is 0.28. (Round to two decimal places as needed.)
The P-value is 0.389 (Round to three decimal places as needed.)
State the conclusion for the test
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