You intend to estimate a population proportion with a confidence interval. The data suggests that the normal distribution is a reasonable approximation for the binomial distribution in this case. Find the critical value that corresponds to a confidence level of 99%. (Report answer accurate to three decimal places with appropriate rounding.) z_{?????/2} = ± For a confidence level of 98% with a sample size of 16, find the critical t value.
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First, we need to find the critical z-value for a 99% confidence level. To do this, we need to find the z-score that corresponds to the area in the middle 99% of the standard normal distribution. Since there is 1% left in the tails, we need to find the z-score Show more…
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