10

A) 0 Go to 16

B) .56 Go to 12C) .82 Go to 14D) 1.0 Go to 18

Find the standard deviation of the ages of three children ages 6, 7, and 8.

11

A) It would increase Go to 12B) It would decrease Go to 13C) It would stay the same Go to 14D) Who cares? Go to 16

How would the standard deviation change for the ages of three children who are 6, 7, and 8 if a fourth child age 7 was added?

12

A. Q1 = 7; Q3 = 14 Go to 16B. Q1 = 7; Q3 = 15 Go to 14C. Q1 = 8; Q3 = 14 Go to 13D. Q1 = 8; Q3 = 15 Go to 10

Find the value of the first quartile and third quartiles.

Wait times in minutes at airport security:

11, 7, 14, 30, 8,

13, 6, 10, 15, 21

13

A. .15% Go to 10B. 2.35% Go to 12C. 13.5% Go to 14D. 16% Go to 15

If the data on cell phone prices is normally distributed with a mean of $131.50 and a standard deviation of 11.9, what percentage of cell phones should cost more than $143.40?

14

A) 60.84 Go to 17B) 78.00 Go to 13C) 15.60 Go to 15D) 44.96 Go to 11

Find the variance of movie concession sales if its standard deviation 7.8

15

A) -15.6 Go to 17B) -1.88 Go to 16C) 1.88 Go to 12D) 15.6 Go to 18

The fat content of meat lovers pizza is 78 grams. Fat content over all pizza is normally distributed with an average of 62.4 grams of fat and a standard deviation of 8.3. How many standard deviations to the nearest 100th is the meat lovers pizza?

16

A) $56.40 Go to 13B) $66.40 Go to 10C) $68.40 Go to 15D) $76.40 Go to 11

Car rental prices for ACE rentals for one week are $42, $55, $65, $80, and $90. If the new management decides to raise all of the rates by $10, what will the new mean become?

17

A) 214,000 < price < 435,900 Go to 10B) 103,200 < price < 546,800 Go to 18C) 77,000 < price < 657,700 Go to 11D) 325,000 < price < 546,800 Go to 15

If the home prices in the Wells subdivision are normally distributed with a mean price of $325,000 and a standard deviation of 110,900, in what price range should 95% of the homes fall?

A) 0.74215 Go to 16

B) 0.73891 Go to 12

C) 0.74537 Go to 14

D) 0.78230 Go to 10

18A normal distribution has a mean of 75.2 and standard deviation of 12.

Find P (x < 83) using the table above

Names __________________________________

10. _______11. _______12. _______13. _______14. _______15. _______16. _______17. _______18. _______

Names __________________________________

10. _______11. _______12. _______13. _______14. _______15. _______16. _______17. _______18. _______

Answers10. C11. B12. D13. D14. A15. C16. D17. B18. A