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January 30, 2015

January 30, 2015

Posted by **Katie** on Thursday, June 27, 2013 at 5:55pm.

Create a 90% confidence interval for the true proportion of adult women who favored stricter gun laws. Find the upper and lower bound. Show your results as percents correct to tenths of a percent.

Please help i'm very confused

- Statistics -
**Kuai**, Thursday, June 27, 2013 at 6:41pmphat = .659

qhat = 1-phat

qhat = 1-.659 = .341

Error = z/2* sqrt( phat *qhat/n)

E = 1.645 * sqrt(.659 * .341/1026))

E = 0.0243

Phat -E <p< phat + E

(.659-.0243, .659+ .0243)

(.6347, .6833) or ( 63.5% , 68.3%)

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