a In a random sample of 200 observations we found
a. In a random sample of 200 observations, we found the proportion of successes to be 48%. Estimate with 95% confidence the population proportion of successes.
b. Repeat part (a) with n = 500.
c. Repeat part (a) with n = 1000.
d. Describe the effect on the confidence interval estimate of increasing the sample size.

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