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Hypothesis

5. It is claimed that in a bushel of peaches, less than ten percent are defective. A sample of 400 peaches is examined and 50 are found to be defective. If ? = 0.025,what will be the decision? Show full working because points will be awarded for how you arrived at your answer, based on the clarity and correctness of yourresponse.
A. Fail to reject the null and conclude the defects are not greater than 10%
B. Reject the null and conclude the defects are not greater than 10%
C. Reject the null and conclude the defects are greater than 10%
D. Fail to reject the null and conclude the defects are not less than 10%
math   statistics and probability   
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Answer #1
z = (p - p1)/sqrt[p (1-p)/n]
z = (0.125 - 0.1) / sqrt [0.1(1 - 0.1)/400]
z = 0.025 / sqrt (0.000225)
z =1.667

p = 0.0478

answered by: jag
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