(05.05 MC)  The number of minutes of commercials shown per h…

(05.05 MC)  The number of minutes of commercials shown per hour was determined 12 times at random. The results are 14, 13, 15, 11, 17, 18, 11, 14, 17, 18, 15, and 13 minutes of commercials shown per hour. Construct a 98% confidence interval for the mean number of minutes of commercials shown per hour. (4 points)

(05.02 LC)  The Central Limit Theorem says that when sample…

(05.02 LC)  The Central Limit Theorem says that when sample size n is taken from any population with mean μ and standard deviation σ when n is large, which of the following statements are true? (4 points) The distribution of the sample mean is approximately Normal. The standard deviation is equal to that of the population. The distribution of the population is exactly Normal. The distribution is biased.