A local radio station plays 40 rock-and-roll songs during each 4-hour show. The program director at the station needs to know th

Question

3 years ago

13

A local radio station plays 40 rock-and-roll songs during each 4-hour show. The program director at the station needs to know th

e total amount of airtime for the 40 songs so that time can also be programmed during the show for news and advertisements. The distribution of the lengths of rock-and-roll songs, in minutes, is roughly symmetric with a mean length of 3.9 minutes and a standard deviation of 1.1 minutes.
A: Describe the sampling distribution of the sample mean song lengths for random samples of 40 rock-and-roll songs.

B: if the program manager schedules 80 minutes of new and advertisements for the 4 hour (240-minute) show, only 160 minutes are available for music. Approximately what is the probability that the total amount of time needed to play 40 randomly selected rock-and-roll songs exceeds the available airtime.

Advanced Placement (AP)

1 answer:

jok3333 [9.3K] · Answer 1 · 2022-03-06T23:07:25+03:00

jok3333 [9.3K]3 years ago

4 0

Answer:

The answer is B.

Explanation: