1 / 16

Chapter 8

Chapter 8. Problem 8-6. Problem 8-15. µ=60 σ =12. 24. 96. 72. 48. Problem 8-15(contd.). .2734. .2266. 63. Problem 8-15(contd.). m. =. 60. x. s. =. 4. x. -. m. -. x. 56. 60. =. =. =. x. z. 1. 0. s. 4. x. 56. Problems 8-16.

ocean
Download Presentation

Chapter 8

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Chapter 8

  2. Problem 8-6

  3. Problem 8-15 µ=60 σ=12 24 96 72 48

  4. Problem 8-15(contd.) .2734 .2266 63

  5. Problem 8-15(contd.) m = 60 x s = 4 x - m - x 56 60 = = = x z 1 . 0 s 4 x 56

  6. Problems 8-16 Since n=40,the sampling distribution of means will approximate a normal distribution .4943 .3962 .3962 74 76 77

  7. Problem 8-16(Contd.) < = - = a . p ( x 74 ) . 5000 . 3962 . 1038 - m - x 74 75 = = = - x z 1 . 26 5 x 40 < < = + = b . p ( 74 x 76 ) . 3962 . 3962 . 7924 < < = - = c . p ( 76 x 77 ) . 4943 . 3962 . 0981 - m - x 77 75 = = = x z 2 . 53 5 x 40 > = - = d . p ( x 77 ) . 5000 . 4943 . 0057

  8. Problem 8-17 1950

  9. Problem 8-18 > = + = b . p ( x 320 ) . 2852 . 5000 . 7852 - m x - 320 330 = x = = - z . 79 80 = = = 80 a . 12 . 649 minutes x x n 40 40 .2852 320

  10. Problem 8-18(Contd.) < < = + = c . p ( 320 x 350 ) . 2852 . 4429 . 7281 - m x - 350 330 x = = = z 1 . 58 80 40 .4429 .2852 320 350

  11. Problem 8-18 contd..

  12. Problem 8-34 • =110,000 • = 40,000/ 50 • = / n = 40,000/ 50 = 5657 • Normal distribution

  13. Problem 8-34 cont’d c. .1368 .3632 112,000 X =110,000 .35 Z P(X> 112,000)=.5000-.1368=.3632

  14. Problem 8-34 cont’d d. .4616 100,000 -1.77 Z P( X> 100,000)=.4616 +.5000=.9616

  15. Problem 8-34 cont’d e. .1368 .4616 100,000112,000 X -1.77 .35 Z P(100,000<X< 112,000)=.4616 + .1368 = .5984

  16. Problem 8-35 - m - x 25 . 1 24 . 8 = = = x z . 93 2 . 5 n 60 < = + = p ( x 25 . 1 ) . 5000 . 3238 . 8238 .3238 .93 Z

More Related