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0 Go to 16 B) .56 Go to 12 .82 Go to 14 1.0 Go to 18

10. Find the standard deviation of the ages of three children ages 6, 7, and 8. 0 Go to 16 B) .56 Go to 12 .82 Go to 14 1.0 Go to 18. 11. 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?.

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0 Go to 16 B) .56 Go to 12 .82 Go to 14 1.0 Go to 18

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  1. 10 Find the standard deviation of the ages of three children ages 6, 7, and 8. • 0 Go to 16 • B) .56 Go to 12 • .82 Go to 14 • 1.0 Go to 18

  2. 11 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? • It would increase Go to 12 • B) It would decrease Go to 13 • It would stay the same Go to 14 • Who cares? Go to 16

  3. 12 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 Q1 = 7; Q3 = 14 Go to 16 Q1 = 7; Q3 = 15 Go to 14 Q1 = 8; Q3 = 14 Go to 13 Q1 = 8; Q3 = 15 Go to 10

  4. 13 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? .15% Go to 10 2.35% Go to 12 13.5% Go to 14 16% Go to 15

  5. 14 Find the variance of movie concession sales if its standard deviation 7.8 • 60.84 Go to 17 • B) 78.00 Go to 13 • 15.60 Go to 15 • 44.96 Go to 11

  6. 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? 15 • -15.6 Go to 17 • B) -1.88 Go to 16 • 1.88 Go to 12 • 15.6 Go to 18

  7. 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? 16 • $56.40 Go to 13 • B) $66.40 Go to 10 • $68.40 Go to 15 • $76.40 Go to 11

  8. 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? 17 • 214,000 < price < 435,900 Go to 10 • B) 103,200 < price < 546,800 Go to 18 • 77,000 < price < 657,700 Go to 11 • 325,000 < price < 546,800 Go to 15

  9. 18 A normal distribution has a mean of 75.2 and standard deviation of 12. Find P (x < 83) using the table above • 0.74215 Go to 16 • B) 0.73891 Go to 12 • 0.74537 Go to 14 • 0.78230 Go to 10

  10. Names _________________ _________________ 10. _______ 11. _______ 12. _______ 13. _______ 14. _______ 15. _______ 16. _______ 17. _______ 18. _______ Names _________________ _________________ 10. _______ 11. _______ 12. _______ 13. _______ 14. _______ 15. _______ 16. _______ 17. _______ 18. _______

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

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