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 lever 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. 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 levels. O B. Ho: H1 " H2 O A. Ho: H1 =H2 O D. Ho: H1 H2 OC. Ho: H1 SH2 H H> H2
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 lever 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. 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 levels. O B. Ho: H1 " H2 O A. Ho: H1 =H2 O D. Ho: H1 H2 OC. Ho: H1 SH2 H H> H2
MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Related questions
Question
1.Null and alternative hypotheses
2. Test statistic
3.P vaule
4. State conclusion for test
5.Construct confidence interval
6.Does confidence interval support conclusion of test?

Transcribed Image Text:IQ scores
Medium Lead Level High Lead Level
72
n2 = 11
100
92
X2 = 91.540
85
84
S2 = 10.963
97
83
92
105
111
91

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.
E 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 levels.
O B. Ho: H1 = H2
H,: H1 > H2
O A. Ho: H1 = H2
O D. Hoi H1 # H2
OC. Ho: H1 SH2
H,: H1 > H2
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