SOLUTION: It is reported that 19% of Caribbean children experience psychological maltreatment. A researcher randomly selected 130 children across the Caribbean. (a) Describe the samp

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Question 912850: It is reported that 19% of Caribbean children experience psychological
maltreatment. A researcher randomly selected 130 children across
the Caribbean.
(a) Describe the sampling distribution for the sample proportion.
(b) What is the probability that more than 25% of the children experienced
psychological maltreatment?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
P(x > .25) = 1 - P(x ≤ .25) = 1 - P( z < 1.7438) = 1 -.9594 = .0406 = 4.06%
with z = (.25-.19)/sqrt(.19*.81/130) = 1.7438