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[DOC File]Test 9C
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SOLUTION #1: FIND THE Z SCORE THAT CORRESPONDS TO .01 ON THE Z TABLE = 2.33. P hat = .229. OR. SOLUTION #2: USE THE CALCULATOR( INVNORM(.01, 20, .0126) = .229. 10. The amount that households pay service providers for access to the Internet varies quite a bit, but . the mean monthly fee is $28 and the standard deviation is $10.
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[DOC File]Z-Score Practice Worksheet
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A score that is 20 points above the mean. z=2. A score that is 10 points below the mean. z=-1. A score that is 15 points above the mean z=1.5. A score that is 30 points below the mean. z=-3. The Welcher Adult Intelligence Test Scale is composed of a number of subtests. On one subtest, the raw scores have a mean of 35 and a standard deviation of 6.
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[DOC File]Topic 15:
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c) Calculate the z-score for a birth weight of 2500 grams. d) Look up this z-score in Table II to determine the proportion of babies born with a low birth weight. e) You can also use your calculator to find the proportion of observations below a particular value in a normal distribution: Hit [2nd] [VARS] and select the command normalcdf
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[DOC File]Section 1
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Z = 2.23. Z = 3.45 . Example 3: Find the indicated probability of the standard normal random variable Z. P(-2.55 < Z < 2.55) P(-0.55 < Z < 0) P(-1.04 < Z < 2.76) Example 4: Find the Z-score such that the area under the standard normal curve to the left is 0.1. Find the Z-score such that the area under the standard normal curve to the right is 0 ...
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[DOC File]Topic 18: The Central Limit Theorem
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Using the CLT, find the z-score corresponding to the sample proportion of smokers equal to 0.25. mean of sampling distribution = standard deviation of sampling distribution = z-score for = 0.25 = Use this z-score and your calculator to calculate the probability that the
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[DOC File]Andrew Boutros
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To find the approximate probability of the test score from the example above, the z-scores need to be looked up on Table A or using the calculator. Example using Table A: What proportion of all young women are greater than 68 inches tall, given that the distribution of heights for all young women follow N(64.5, 2…
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Z score calculator 2 proportion