Question

Majesty Video Production Inc. wants the mean length of its advertisements to be 27 seconds. Assume the distribution of ad length follows the normal distribution with a population standard deviation of 2 seconds. Suppose we select a sample of 16 ads produced by Majesty. What can we say about the shape of the distribution of the sample mean time?What is the standard error of the mean time?What percent of the sample means will be greater than 28.25 seconds?hat percent of the sample means will be greater than 25.50 seconds?What percent of the sample means will be greater than 25.50 but less than 28.25 seconds?

Answer 1