The neighborhood dry cleaner wants to estimate the proportion of all purchases that are paid in...
The neighborhood dry cleaner wants to estimate the proportion of all purchases that are paid in cash.
If they want their estimate to be within 0.03 with 95% confidence, how many receipts would they need to sample if:
1. We have no previous information.
2. Previous samples have never given a sample proportion higher than 0.35.
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The neighborhood dry cleaner wants to estimate the proportion of
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a. Assume that a sample is used to estimate a population proportion p. Find the 95%...
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