# The weight of a 5th grader is normally distributed with a mean of 65 pounds and a variance of 86 pounds*2. Let weight, in pounds, be represented by random variable X.Question 3P(61xx2)-0.0990. Find x2. (Remember the label.)poundsThe Economic Policy Institute reports that the average entry-level wage for male college graduates is \$20.24 per hour and for female college graduates is \$19.72 per hour. Thestandard deviation for male graduates is \$3.94 and for female graduates is \$2.67. Assume wages are normally distributed. (See exercise 23 on page 326 of your textbook for asimilar problem.)Question 4If 54 male graduates are chosen, find the probability the sample average entry-level wage is at least \$19.23.

Question
186 views
check_circle

Step 1

Question 3:

Introduction:

Let X be the weight of a randomly selected 5th grader. The mean weight is μ = 65 pounds and variance is σ2 = 86 pounds2. The weights are normally distributed.

Thus, the standard deviation is: σ = √86 pounds = 9.27 pounds.

Step 2

Calculation for Question 3:

The probability is:

Step 3

Question 4:

Introduction:

Let Y be the entry-level wage of a randomly selected male college graduate. The mean wage of a male graduate is μ = \$20.24 and standard deviation is σ = \$3.94. The wages are normally dis...

### Want to see the full answer?

See Solution

#### Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in