Find the sample size needed to give, with 95% confidence, a margin of error within 10. Within
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Find the sample size needed to give, with 95% confidence, a margin of error within ±10. Within ±5. Within ±1. Assume that we use σ̃ = 30 as our estimate of the standard deviation in each case. Comment on the relationship between the sample size and the margin of error.
We examine the effect of different inputs on determining the sample size needed.
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We use z 196 for 95 confidence and we use 30 For a desired margin of error of ME ...View the full answer
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Related Book For
Statistics Unlocking The Power Of Data
ISBN: 9780470601877
1st Edition
Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock
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