If it is appropriate to do so, use the normal approximation to the p^ p^ -distribution to calculate the indicated probability:
Standard Normal Distribution Table
n=80,p=0.715n=80,p=0.715
P( p̂ > 0.75)P( p̂ > 0.75) =
Enter 0 if it is not appropriate to do so.
Please provide correct answer. thanks
Solution
Given that,
_{} = [p( 1 - p ) / n] = [(0.715 * 0.285) / 80 ] = 0.0505
P( > 0.75) = 1 - P( < 0.75)
= 1 - P(( - _{} ) / _{} < (0.75 - 0.715) / 0.0505)
= 1 - P(z < 0.69)
= 1 - 0.7549
= 0.2451
P( > 0.75) = 0.2451
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