Question: a random sample of n observations from a normal distribution, gave the following 90% confidence interval for p:(0.233,0.385). Approximately how many observations were in the

a random sample of n observations from a normal distribution, gave the following 90% confidence interval for p:(0.233,0.385). Approximately how many observations were in the sample?

A.31

B.35

C.198

D.140

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