Written Assignment 8 - Gabriel A. Godart

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

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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.
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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.
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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.

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

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