Thirty two percent of all Americans drink bottled water more than once a week. (Natural resources defense council, December 4, 2015). Suppose you have been hired by the natural resources defense council to investigate bottled water consumption in st. Paul. You plan to select a sample of st Paulities to estimate the proportion who drink bottled water more than once a week. Assume the population proportion of st Paulities who drink bottled water more than once a week is 0.32, the same as the overall proportion of Americans who drink bottled water more than once a week. Use the z table D. Based upon a smaller sample of only 190 st. Paulities, what is the probability that the sample proportion will be within 0.08 of the population proportion. (To 4 decimal). Probability = ? E. As measured by the increase in probability, how much do you gain in precise by taking the larger sample in parts a and b rather than the smaller sample in parts c and d? Reduced by ? Have gain in precision by increasing the sample. A. Duppose you select a sample of 540 st. Paulities. Show the sampling distribution pf p (to 4 decimals). E(p) = .32 Op= ? I got 0.0203 but its wrong Thank you
Thirty two percent of all Americans drink bottled water more than once a week. (Natural resources defense council, December 4, 2015). Suppose you have been hired by the natural resources defense council to investigate bottled water consumption in st. Paul. You plan to select a sample of st Paulities to estimate the proportion who drink bottled water more than once a week. Assume the population proportion of st Paulities who drink bottled water more than once a week is 0.32, the same as the overall proportion of Americans who drink bottled water more than once a week. Use the z table
D. Based upon a smaller sample of only 190 st. Paulities, what is the probability that the sample proportion will be within 0.08 of the population proportion. (To 4 decimal).
Probability = ?
E. As measured by the increase in probability, how much do you gain in precise by taking the larger sample in parts a and b rather than the smaller sample in parts c and d?
Reduced by ?
Have gain in precision by increasing the sample.
A. Duppose you select a sample of 540 st. Paulities. Show the sampling distribution pf p (to 4 decimals).
E(p) = .32
Op= ? I got 0.0203 but its wrong
Thank you
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