21. For an equiprobable chi-squared goolullea of fit test with an HO of uniforml

Question

21. For an equiprobable chi-squared goolullea of fit test with an HO of uniformly distributed with the same parameters as the sample for 24 obs, you would have how many degrees of freedom. For question 27, the following data represents the number of defects produced before and after quality training in 6 different industrial plants. You would like to see if the training is effective in reducing defects. Before is set 1, after is set 2. Assume normality a. b. 3 c. d. none of the above Before 13, 15, 18, 11, 13, 12, 14 After 11, 16, 16, 12, 11, 13, 14 22. If you had an equiprobable chi-squared goodness of fit test with an HO of Normally distributed with a given theoretical mean of 12.23 and a given std of 3.54 and you had 4 27. What is the null hypotheses? cells, what would be the critical value at alpha -0.05 a. ul-u2 0 b. uD = 0 or uDG0 c. Dbar=0 a. 3.841 b. 5.991 d. uD not-0 c. 7.815 d. 9.488 34. If you are comparing the means of a new less expensive, but more productive system versus an existing system with unequal variances, using a rational thought process, you would want to determine your critical value degrees of freedom by: a. rounding down b. rounding up c. Does not apply d. Not enough information to decide

Explanation / Answer

21.

Degrees of freedom = 24 - 1 = 23

Option D

22.

From chi square table, the value = 7.815

Option C

27.

Null hypothesis

mu1 - mu1 = 0

Option A

34.

Option D. Not enough information given to decide

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