Normal distribution to approximate binomial distribution

Decide whether the normal distribution can be used to
approximate the binomial distribution. If it can, use the z-test to test the
claim about the population proportion p for the given sample statistics and
level of significance a.

^

A. Claim: p
< 0.70; a = 0.01 Statistics: p = 0.50, n = 68

^

B. Claim: p
< 0.50; a = 0.10 Statistics: p = 0.71, n = 129

Test the claim about the indicated population parameter with
? a (X^2) -test using the given sample statistics and level of significance a.
Assume the population is normally distributed.

A. Claim: ?
^2 ? 60 a = 0.025

Statistics: s?2 = 72.7, n = 15

B. Claim: ?
? 0.035: a = 0.01

Statistics: s = 0.026, n = 16

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