4870 13702&questionId;:10&flushed-false;&cld;:5049662&back; D Assign nen a pc f-

Question

4870 13702&questionId;:10&flushed-false;&cld;:5049662&back; D Assign nen a pc f- e ? ? Secure l com Student/PlayerHomework.aspx?homeworkld math Apps Bookmarks MAT-240-X6831 Applied Statistics 18EW6 Homework: 5-2 MyStatLab: Module Five Problem Set Score: 0 of 5 pts HW As r g tat both pqulations are norm all distributed construct 95% confidence interval about pi Hz , represents the mean of the en en mental pend The centidence interval has s lower bound of and an upper bound of e sscending ordr Round to two decimal places as needed

Explanation / Answer

Solution:- Given that n1 = 25 , n2 = 15

x1 = 46.8, x2 = 40.8

s1 = 5.7, s2 = 11.2

=> df = n1+n2-2 = 25+15-2 = 40-2 = 38

=> 95% confidence interval for the M1 - M2 = (M1 - M2) ± ts(M1 - M2)
= 6 ± (2.02 * 2.67)
= 6 ± 5.401
= 0.599 , 11.401.

=> 95% confidence interval has a lower of 0.60 and an upper bound of 11.40

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