Thirty two percent of all americans drink bottled water more than once a week (national resources fefence council,December 4,2015). Suppose you ahve been hired by the natural resources defense council to investigate bottled water consumption in st. Paul. You paln to select a sample of st. Paulities to estimate the proportion who drink bottled water more than once a week. Assume the population pro6od st. Paulities who drink bottles water more than once a week is 0.32, the same as the overall proportion of Americans whp drink bottled water more than once a week. Use z table A. Suppose you select a sample of 530 st. Paulities. Show the sampling distribution of p to 4 decimal. E(p) = .32 Op= ? B. Based upon a sample of 540 st. Paulities, what is the probability that the sample proportion will br within 0.08 of the population proportion to 4 decimal. Probability =? C. Suppose you sel6a samole of 190 st. Paulities. Show the sampling distribution of p to 4 decimals. E(p) = 0.32 Op= ? D. Based upon a smaller 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 do you gain in precision by taking the larger sample in parts a and b rather than the smaller sample in oarts c and d? Reduced by. ? Have gain in precision by increasing the sample. Thank you, I appreciate your help
Thirty two percent of all americans drink bottled water more than once a week (national resources fefence council,December 4,2015). Suppose you ahve been hired by the natural resources defense council to investigate bottled water consumption in st. Paul. You paln to select a sample of st. Paulities to estimate the proportion who drink bottled water more than once a week. Assume the population pro6od st. Paulities who drink bottles water more than once a week is 0.32, the same as the overall proportion of Americans whp drink bottled water more than once a week. Use z table
A. Suppose you select a sample of 530 st. Paulities. Show the sampling distribution of p to 4 decimal.
E(p) = .32
Op= ?
B. Based upon a sample of 540 st. Paulities, what is the probability that the sample proportion will br within 0.08 of the population proportion to 4 decimal.
Probability =?
C. Suppose you sel6a samole of 190 st. Paulities. Show the sampling distribution of p to 4 decimals.
E(p) = 0.32
Op= ?
D. Based upon a smaller 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 do you gain in precision by taking the larger sample in parts a and b rather than the smaller sample in oarts c and d?
Reduced by. ?
Have gain in precision by increasing the sample.
Thank you, I appreciate your help
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