Assume that the heights of men are normally distributed with a mean of 69.0 inches and a standard deviation of 2.8 inches. if 64 men are randomly selected, find the probability that they have a mean height between 68 and 70 inches.

0.9958

Step-by-step explanation:

We assume that the heights of men are normally distributed with

Mean :

Standard deviation :

Sample size :

The value of z-score is given by:

Let x be the height of the randomly selected men.

For x= 68

For x= 70

Now, the probability that they have a mean height between 68 and 70 inches is given by :-

Hence, the probability that they have a mean height between 68 and 70 inches = 0.9958

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

f(x) = y

f(-3) = -5

step-by-step explanation: