Mathematics, 03.06.2020 02:57, xojade

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

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 17:00, alexandraschwartz21

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

Answers: 1

continue

Mathematics, 21.06.2019 17:00, zacksoccer8279

Me! last question, and i'm stuck! write the algebraic expression that models the word phrase. the product of 2 divided by the number h and 8 more than the number k

Answers: 1

continue

Mathematics, 21.06.2019 17:30, queenpaige2015

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

Answers: 2

continue

Mathematics, 21.06.2019 18:00, CarQuestionl506

If a translation of t-3,-8(x, y) is applied to square abcd what is the y-coordinate of b'? the y-coordinate of is 43 mark this and return save and exit next submit

Answers: 1

continue

Do you know the correct answer?

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