I have selected choice C for the first part but I do not know if it is correct.

Question

I have selected choice C for the first part but I do not know if it is correct. Please confirm and solve the other parts.

Yes/No because the confidence interval contains zero/only positive values/only negative values.

Please try to show your work.

3 of 7 This Question 1 pt Given in the table are the BMI statistics for random samples of men and women. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. H H. The test statistic, t is Round to two decimal places as needed The P-value is ound to three decimal places as needed. This Quiz: 7 pts possible Question Help Male BMI Female EMI H1 28.3391 24.0116

Explanation / Answer

option C is correct

here

std error =(s12/n1+s22/n2)1/2 =1.45

test stat t=(X1-X2)/std error=2.98

and p value for above at 62 degree of freedom =0.0041

option D is correct

for 95% CI ; and 62 degree of freedom t =1.999

hence confidence interval =mean -/+ t*Std error =1.425 ; 7.230

Yes CI gives similar result

S1 8.960 S2 4.086 n1 46 n2 46 X1 28.339 X2 24.012

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