Confidence Intervals for p Statistics Inference for Proportions Confidence Intervals for p Questions How do you construct a 95% confidence interval? How do you calculate the confidence interval? A random sample of 44 eight-ounce servings of different juice drinks has a mean of 79.8 calories and a standard deviation of 49.3 calories. How do you construct the sample's 90% and 95% confidence intervals? Inference for Proportions View all chapters Confidence Intervals for p One-sample Hypothesis Test for p Two-sample Hypothesis Test for p Next