(Solution) 1A Medical Clinic In A Small City In The State Of Washington Wants To Estimate The Mean Serum Cholesterol Level (measured In Mg Of Cholesterol Per... | Snapessays.com


(Solution) 1A medical clinic in a small city in the state of Washington wants to estimate the mean serum cholesterol level (measured in mg of cholesterol per...


please help me solve six statistics problems, thank you 1

 

?

 

A medical clinic in a small city in the state of Washington wants to esTmate the mean serum

 

cholesterol level (measured in mg of cholesterol per 100 mL of blood) of teenage males. Based on the

 

following summary data taken from a random sample of 10 teenage males from this community,

 

compute a 90% conFdence interval for the mean serum cholesterol level of teenage males in this city.

 

Assume that the sample was taken from a normal distribuTon. Round your conFdence limits to 2

 

decimal places.

 

Summary Data: n = 10, x¯=223.562, s = 24.920

 

Select one:

 

A. (207.15, 240.67)

 

B. (209.12, 238.01)

 

C. (210.12, 239.56)

 

D. (213.34, 242.83)

 

E. None of the above

 

2

 

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Pschological tests are o±en used to determine the hosTlity levels in people. High scores on the HL²

 

pschological test corresponds to high hosTlity levels. Suppose that 26 college students, all with equally

 

high HL² test scores, were separated into two groups randomly. Group 1 (10 students) was treated for

 

high hosTlity levels by using Method A; whereas Group 2 (16 students) was treated for high hosTlity

 

levels by using Method B. Both groups were treated for a period of 5 months, at which Tme all 26

 

students were again given the HL² test. Below is the summary data on the HL² test for the two groups.

 

Group 1: sample mean is 79 and sample standard deviaTon is 7

 

Group 2: sample mean is 84 and sample standard deviaTon is 8 Compute a 95% conFdence level for the

 

di³erence in the means of the two treatment methods and select the best answer below. Assume that

 

the independent random samples were taken from normal distribuTons and that the two populaTon

 

variances are equal.

 

Select one:

 

A. We are 95% conFdent that there is no staTsTcally signiFcant di³erence in the mean treatment

 

methods for hosTlity.

 

B. We are 95% conFdent that Method A is a be´er treatment for hosTlity than Method B.

 

C. We are 95% conFdent that Method B is a be´er treatment for hosTlity than Method A.

 

D. We are 95% conFdent that there is a staTsTcally signiFcant di³erence in the mean treatment methods

 

for hosTlity.

 


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This question was answered on: May 23, 2022

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