1. The population of quarters have a mean weight of 5.670 g and a standard deviation of 0.062 g. The distribution of the weights is normal. a. What is the probability that a randomly selected quarter has a weight less than 5.600 g

0.129449

Step-by-step explanation:

Let x be the random variable that represents the population of quarters.

Given: The population of quarters have a mean weight of 5.670 g and a standard deviation of 0.062 g.

The probability that a randomly selected quarter has a weight less than 5.600 g:

The required probability = 0.129449

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

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40