Question 14 1 pts A random sample of 87 was collected and provided a sample mean 63.9 and a sample standard deviation of 13.94. The values were the number of hours spent watching sports programs in one month. Calculate the upper bound of a 90% confidence interval. Round up to two decimal places for critical value AND final answer.
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The critical value can be found using a t-distribution with n-1 degrees of freedom, where n is the sample size. Since the sample size is 87, the degrees of freedom is 87-1 = 86. Using a t-distribution table or calculator, the critical value for a 90% confidence Show more…
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