Question
(A) A population has standard deviation=17.8. How large of a sample must be drawn so that a99.8% confidence interval forwill have a margin of error
(A) A population has standard deviation=17.8.
How large of a sample must be drawn so that a99.8% confidence interval forwill have a margin of error equal to4.4?
Round the critical value to no less than three decimal places.
Round the sample size up to the nearest integer.
(B) If the required confidence level were99.9%, would the necessary sample size be larger or smaller?
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Essentials Of College Algebra
Authors: Margaret L Lial, John E Hornsby, David I Schneider, Callie Daniels
11th Edition
0321912241, 9780321912244
