Question

Feature movie lengths (in hours) were measured for all movies shown in the past year in the U.S. The mean length of all feature length movies shown was 1.80 hours with a standard deviation of 0.15 hours. Suppose the length of a random sample of 20 movies was recorded from all movies released this year. The mean length of the feature length movies was found to be 1.72 hours with a standard deviation of 0.18 hours. Suppose we were to make a histogram of the feature length movie times of all movies in the past year. The histogram would be a display of which of the following? Select one: a. distribution of a sample b. population distribution c. Normal distribution d. sampling distribution of means

Answer 1

Answer is POPULATION DISTRIBUTION

This is population distribution because we are making histogram of all the moveies in the past year, i.e. we are considering the entire population. So, it is a population distribution

Option A is incorrect because it is not disribution of a single mean

option C is incorrect because we making histogram for population, so it will be normal but it is for the population.

option D is incorrect because it is no the sampling distribution of means. It is the histogram for all movies.