# Computing Standard Deviation Standard Scores and Percentiles - ANSWER Sheet to complete (1) (1).doc

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Computing Standard Deviation, Computing Standard Scores and Percentiles, and Margin of Error and Confidence Levels ANSWER SHEET NAME__Brandi Dail________ 1. a. Mean: 91 Median: 93 Standard Deviation: 9.03528 1. b. Mean: 99.45 Median: 94 Standard Deviation: 31.0334 How does this change affect the mean and standard deviation computed in part a. the mean and standard deviation each increased for part b. 2. a. Standard Score: Percentile: 2. b. Standard Score: Percentile: 2. c. Percentage: (website was blocked and couldn’t access textbook at home) 2. d. Percentage: 2. e. How many men are at least 6’7” tall? 3. a. Margin of error:

Unformatted text preview: Confidence interval: Confidence interval: 3. b. Margin of error: 4. a. Margin of error: 1.95 4. b. Confident Yes__ or No__ Justification for answer:_______________________________________________________________________________ ___________________________________________________________________________________ 4. c. What can we conclude: __________________________________________________________ Can we assert with confidence that lives are still disrupted? ___________________ 4. d. How many people should we interview? ________________________...
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