Question

QULSTUN 18 A survey conducted by National Association of Colleges and Employers found that 76% of all the class of 2015 graduates landed a full-time job or were accepted into graduate school or professional school within six months of earning their degree. Suppose a random sample of 200 graduates is obtained, find the mean and the standard deviation of the sampling distribution of sample proportion, A. HA= 76 and Op = 200 B. M = 0.76 and Op = 0.0634 C. Mô = 0.76 and Op = 0.0302 D.up=0.76 and op = 0.000912

Answer 1

Mean $\mu$ $\hat{p}$ = $\hat{p}$ = 0.76

Standard deviation $\sigma$ $\hat{p}$ = sqrt [ $\hat{p}$ ( 1 - $\hat{p}$ ) / n ]

= sqrt [ 0.76 ( 1 - 0.76) / 200 ]

= 0.0302

$\mu$$\hat{p}$ = 0.76 , $\sigma$ $\hat{p}$ = 0.0302