A manufacturer knows that their items have a normally distributed length, with a mean of 17.4 inches, and standard deviation of 3.6 inches. If 4 items are chosen at random, what is the probability that their mean length is less than 18.6 inches?

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.

range =5

step-by-step explanation:

to find the range, we take the largest value and subtract the smallest value.

the largest value is 5

the smallest value is 0

the range is 5-0   =5