The manager of an orchard expects about 70% of his apples to exceed the weight requirement for
"Grade A" designation. At least how many apples must he sample to be 90% confident of
Estimating the true proportion within ±4%?
A) 89
B) 19
C) 23
D) 356
E) 505

Question

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The Answer of The manager of an orchard expects about 70% of his apples to exceed the weight requirement for
"Grade A" designation. At least how many apples must he sample to be 90% confident of
Estimating the true proportion within ±4%?
A) 89
B) 19
C) 23
D) 356
E) 505

The Manager of an Orchard Expects About 70% of His