week 8 conference questions

week 8 conference questions - #2 Area 0.8997 Z = 1.28 #3...

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#2 Area 0.8997 Z = 1.28 #3 Area 0.1010 closest corresponding z value: z = - 1.27 Closest Area = 0.1020 #4 Alpha area: 0.10 Sample size: 76 Degree of freedom: 75 t-value: 1.665 #5 1. Find the area for X R 2 /2 = 0.025 n = 23 df = 23-1 = 22 X R 2 = 36.781 2. Find the area for X L 2 /2 = 0.995 1- /2 = 1- 0.995 = 0.005 df = 28
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X L 2 = 50.993 #6 Chapter 8: Hypothesis Statements H o is nearly always the Original Claim . H 1 is always what is being tested or the Alternate Hypothesis. Establishing H 0 and H 1 depends upon the wording of the problem. You need to know that the number of tails depends on your H 0 and H 1 values. For example: Any time you see equal signs ( = or ) you should automatically know that the tests are two-tailed. If H 0 μ = x, then H 1 is μ ≠ x The t-tests will have two-tails (have two extremes). You are testing to see if the test mean (H 1 ) is has extreme outliers, either greater than or lesser than (not equal to) the expected original mean (H 0 ). This type of test is used when we really need to know if the test samples are close to the expected mean. For example, the chemical content of pills must be very close t o what we expect them to be. If medications contain too much of the active ingredient then we might have some serious side effects and if pills do not have enough of the active ingredient then we might not gain any benefit from taking the pill. Whenever you see a
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This note was uploaded on 04/14/2009 for the course STAT stat 200 taught by Professor Mosekim during the Spring '09 term at Wisconsin.

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week 8 conference questions - #2 Area 0.8997 Z = 1.28 #3...

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