Stats 250 W12 Sunday Mar 25 Exam 2 Review Solutions

# C thefollowingoutputprovidesapvalue0700

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Unformatted text preview: lot 2 was a QQ plot of the observations for the Cadmium batteries, and Plot 3 was a QQ plot of all batteries of each type. Which Q‐Q plot or plots would be used for checking the assumptions for this test? Clearly circle your answer. i. Plot 1 and Plot 2 ii. Plot 3 iii. All three Q‐Q Plots iv. None of them. The 45 talk‐time measurements are large enough to not need to check normality. c. The following output provides a p‐value = 0.700. Using appropriate symbols, write the hypotheses that this p‐value is used to test. H0: ________σ1 = 2________________________ Ha: __________ σ1 ≠ (Can use σ or σ , as long as all the same) 2 2_____________ d. The researcher decided to use the pooled t‐test results. The df column is missing in the display in part (c). What are the df corresponding to the “equal variances assumed” t‐test? df = 25 + 20 – 2 = 43 df = _______43___________ e. For the hypotheses in part (a), pro...
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