In: Statistics and Probability
Solution
Given that,
p = 0.65
1 - p = 1 -0.65=0.35
n = 550
= p =0.65
= [p( 1 - p ) / n] = [0.65*(0.35) /550 ] = 0.02
P( > 0.68) = 1 - P( <0.68 )
= 1 - P(( - ) / < (0.68 -0.65) /0.02 )
= 1 - P(z < 1.5)
= 1 - 0.9332 = 0.0668
probability = 0.0668