Problem 3: A consumer agency having a washing machine was higher for suburban ho

Question

Problem 3: A consumer agency having a washing machine was higher for suburban houschoids then for omly silected a if that statement was correct at the 0.05 level of significance, a repors households in both suburban and urben environments and obtained staned that he thought thas the proportisn et hoo uce number of Number Surveyed Namber having washing Proportion having washing a. Statie, perferm and interpeet an approgriate hopothesis test using the 0,05 level of significance Co. rena-mr-oc w- or the difference ofthe tworpo ati na op b. Compute the 95% confidence interval

Explanation / Answer

Solution:-
b) (ps - pu) +/- Z * Sqrt[(ps*qs/ns) + (pu*qu/nu)]

= (0.810 - 0.724) +/- 1.96 * sqrt[(0.81*0.19/300) + (0.724*0.276/250)]

= (0.015 , 0.157)

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