The average playing time of compact discs in a large collection is 37 minutes, and the standard deviation is 3 minutes. (a) what value is 1 standard deviation above the mean

For μ = 37 minutes and σ = 3 minutes, the value of μ + 1σ is

... 37 minutes + 1·(3 minutes) = 40 minutes

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.