It has been determined with 95% confidence that the proportion of on-line students at SPC who live in Pinellas County is between 0.73 and 0.77. Determine the sample proportion of on-line SPC students who live in Pinellas County.

sample proportion is 0.75

Step-by-step explanation:

given data

confidence = 95%

Pinellas County  between = 0.73 and 0.77

solution

We write confidence interval in terms of p and E as

(p - E ) <  P  <  ( p + E )     1

when we compare it 0.73 < p < 0.77

we get        

so here

p - E = 0.73    2

and E is 0.02 so

p - 0.02 = 0.73

p = 0.75