What am I doing wrong on 5.24? i keep getting .92 for the answer for p-hat.please write the answer out the long way this time. Thanks. P-0.9 = 0.005 0.0079 p-0.9 = -2.576, from the excel function, =...

What am I doing wrong on 5.24?
i keep getting .92 for the answer for p-hat.
please write the answer out the long way this time. Thanks.

Extracted text:


Extracted text: P-0.9 = 0.005 0.0079 p-0.9 = -2.576, from the excel function, = NORM.INV 0.005 0.0079 P=0. 88 le proportion is 0.88