MYNOTES
To estimate the mean within 0.31 of 1 standard deviation with 0.95 confidence? (Round your answer up to the nearest whole number.)
You may need to use the appropriate table in Appendix B to answer this question.
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MYNOTES
The image of the public library is constantly changing, and their online services continue to grow, Usage of the library's home page grew in 17% during the past 12 months. It has been estimated that the current average length of a visit to the library's homepage is approximately 20 minutes. The library wants to take a sample to statistically estimate this mean. How large will the sample need to be to estimate the mean within 0.31 of 1 standard deviation with 0.95 confidence? (Round your answer up to the nearest whole number.) 417
You may need to use the appropriate table in Appendix B to answer this question.
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