The length of country and western songs is normally distributed and has a mean of 170 seconds and a standard deviation of 40 seconds. find the probability that a random selection of 16 songs will have mean length of 158.30 seconds or less. assume the distribution of the lengths of the songs is normal.

0.1210

Step-by-step explanation:

Given : The length of country and western songs is normally distributed with

Sample size :

Let x be the length of randomly selected country song.

z-score :

The probability that a random selection of 16 songs will have mean length of 158.30 seconds or less by using the standard normal distribution table will be

=

Hence, the probability that a random selection of 16 songs will have mean length of 158.30 seconds or less is 0.1210

first anwser choice.

step-by-step explanation:

the greater/less or equal to symbol (> or < with the line at the bottom) is a closed/filled in circle.

-5c + 2 _< _27

subtract from both sides by 2

-5c _< _ 27

divide both sides by -5

c _< _ 5.4

flip the inequality sign

c _> _5.4

the only possible answer that would match the simplified inequality is the first answer choice

d? maybe

step-by-step explanation: