Written Assignment 8 - Gabriel A. Godart

Written Assignment 8 - Gabriel A. Godart - Principles of...

This preview shows pages 1–3. Sign up to view the full content.

Principles of Statistics 2010-04-STA-201-009OL Written Assignment 8 Gabriel A. Godart Thomas Edison State College. Exercises Set 13.1 Exercise 13.4 Because a χ²-curve is right skewed as opposed to a t-curve that is bell-shaped. Exercise 13.6 df = 22 a. . χ0 012 = 40.290 b. . χ0 9952 = 8.643 c. Exercise 13.8 d. df = 4 a. . χ0 0052 = 14.860 b. . χ0 992 = 0.297 c. d. Exercises Set 13.2 e. f. Exercise 13.16 g. The expected frequencies are 11, 10.5, 12.5, 15 and 1. The assumptions are satisfied. All are 1 or more and exactly 20% are less than 5. h. Exercise 13.28 a. The population consists of last year’s US car sales. The variable under consideration is the type of car.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Step 1: c. i. T ype Of Car j. Distr ibution k. Obser ved Frequency (O) l. Expec ted Frequency (E) m. O-E n. (O- E)² o. ( O - ) E ²E p. S mall q. 0.32 8 r. 133 s. 164 t. -31 u. 961 v. 5.8 6 w. M idsize x. 0.44 8 y. 249 z. 224 aa. 25 ab. 625 ac. 2.7 9 ad. L arge ae. 0.09 4 af. 47 ag. 47 ah. 0 ai. 0 aj. 0 ak. L uxury al. 0.13 am. 71 an. 65 ao. 6 ap. 36 aq. 0.5 54 ar. T otal as. at. 500 au. av. aw. ax. 9.2 04 ay. az. Step 1: ba. : H0 Last year’s type of car distribution for US Car sales is the same from the 1990’s distribution. bb. : Ha Last year’s type of car distribution for US Car sales is the different from the 1990’s distribution. bc. Step 2: bd. Expected Frequencies are presented in column 4 of the above table. be. Step 3: bf. The assumptions are satisfied since all expected frequencies are at least 5. bg.
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/10/2011 for the course STA 201 taught by Professor Kohn during the Spring '09 term at Thomas Edison State.

Page1 / 9

Written Assignment 8 - Gabriel A. Godart - Principles of...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online