If you don’t know your population mean (μ) but you do know the standard deviation (σ), you can find a confidence interval for the population mean, with the formula: x̄ ± z * (σ / √n), Where x̄ = the sample mean, z = z-score, σ = standard deviation, n– sample...
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a) A 98% confidence interval based on df = 23. b) A 90% confidence interval based on df = 59. Critical Value: The critical value of the t-score is always than the critical value of the z-score for the same confidence lev...
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Step 1:Findza/2by dividing the confidence level by two, and looking that area up in thez-table: .99/2 = 0.495. The closest z-score for 0.495 is 2.58. Step 2:Multiply step 1 by the standard deviation. 2.58 * 2.9 = 7.482
The local sum for a feature and its neighbors is compared proportionally to the sum of all features; when the local sum is very different from the expected local sum, and when that difference is too large to be the result of random chance, a statistically significant z-score results. See ...
Find a value of {eq}c {/eq} so that {eq}P(Z \leq c) {/eq} = 0.43. a. 1.18 b. -0.18 c. 0.32 d. 0.82 e. 0.18 f. none of the above Z-score The z-score is also known as a normal score which determines how...
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