requestbook
32

Step-by-step Answer
PAGE: 704SET: ExercisesPROBLEM: 32
Please look in your text book for this problem Statement

The random sample size is .

of adult americians had obtained bacheors degree, thus .

The value of .

The value of mean is .

Substitute and .

The value is .

The standard deviation is .

Substitute , and .

.

The standard deviation is .

Find the probability .

.

Find the corresponding -values  for and .

The value of is .

For , and

.

For , and .

.

The approximate area corresponds to is .

Therefore, the probability that in a random sample of people , between is .

The probability that in a random sample of people , between is .



TESTIMONIALS

"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!"

June Barnett

"Your site is amazing! It helped me get through Algebra."

Charles

"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful."

Dan Pease

QUESTIONS? LET US HELP.
Simply chose a support option

My status

JOIN US ON:     
mathskey.com is not affiliated with any Publisher, Book cover, Title, Author names appear for reference only