proportion from step 1 is 7.2%Homework Answers
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proportion from step 1 is 7.2%
3. Using the proportion you found from step 1 as...
In a study of government financial aid for college students, researchers needed to estimate the proportion...
In a study of government financial aid for college students, researchers needed to estimate the proportion of full-time college students who earn a bachelor's degree in 4 years or less. Assuming a confidence level of 90%, find the sample size needed to estimate that proportion with a 0.03 margin of error in two cases: (1) no assumptions are made about the value of the sample proportion, and (2) prior studies have shown that roughly 60% of full-time students earn a...
5. New Zealand is due for a general election by 2020. Pollsters want to estimate the proportion of the voting population...
5. New Zealand is due for a general election by 2020. Pollsters want to estimate the proportion of the voting population in favor of re‐electing the current Prime Minister, Jacinda Ardern. They want a margin of error of 0.01 and will use a confidence level of 95%. a. What sample size did they need? (Assume p* = 0.5.) (4 points) b. The pollsters’ budget was not big enough to accommodate a sample large enough to achieve that narrow margin of...
In a prior sample of us adults the center for disease control found that 10% of...
In a prior sample of us adults the center for disease control found that 10% of the people in this sample had pin worms but the margin of error for the population estimate was too large. They want the margin of error to be 2% at the 95% confidence level. a) what is the minimum sample size required to obtain this type of accuracy? Use the prior sample proportion in your calculation b) what is the minimum sample size required...
In the planning stage, a sample proportion is estimated as pˆ = 72/80 = 0.90. Use...
In the planning stage, a sample proportion is estimated as pˆ = 72/80 = 0.90. Use this information to compute the minimum sample size n required to estimate p with 95% confidence if the desired margin of error E = 0.05. What happens to n if you decide to estimate p with 90% confidence? (You may find it useful to reference the z table. Round intermediate calculations to at least 4 decimal places and "z" value to 3 decimal places....
Pinworm: In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that...
Pinworm: In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 10% of the people in this sample had pinworm but the margin of error for the population estimate was too large. They want an estimate that is in error by no more than 2.5 percentage points at the 90% confidence level. Enter your answers as whole numbers. (a) What is the minimum sample size required to obtain this type of accuracy? Use the prior...
In the planning stage, a sample proportion is estimated as P = 99/110 = 0.90. Use...
In the planning stage, a sample proportion is estimated as P = 99/110 = 0.90. Use this information to compute the minimum sample size n required to estimate p with 95% confidence if the desired margin of error E= 0.05. What happens to n if you decide to estimate p with 90% confidence? (You may find it useful to reference the z table. Round intermediate calculations to at least 4 decimal places and "z" value to 3 decimal places. Round...
Please show work step by step. thank you! 12. Use the given data to find the...
Please show work step by step. thank you!
12. Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.028; confidence level: 99%; p and q unknown.
1) A confidence interval for a population proportion p is found to be (0.32, 0.36). The...
1) A confidence interval for a population proportion p is found to be (0.32, 0.36). The margin of error is: 2) A confidence interval for a population proportion p is found to be (0.32, 0.36). The sample proportion ?̂ is: 3) Given Ha: p ≠ 0.85 and α = 0.05, which level of confidence should you use to construct a confidence interval that corresponds to this hypothesis test?
Question Help Determine the point estimate of the population proportion, the margin of error for the...
Question Help Determine the point estimate of the population proportion, the margin of error for the following confidence interval, and the number of individuals in the sample with the specified characteristic, x, for the sample size provided Lower bound 0.532, upper bound = 0.758, n = 1000 The point estimate of the population proportion is (Round to the nearest thousandth as needed.) The margin of error is (Round to the nearest thousandth as needed.) The number of individuals in the...
A) A certain region would like to estimate the proportion of voters who intend to participate...
A) A certain region would like to estimate the proportion of voters who intend to participate in upcoming elections. A pilot sample of 25 voters found that 17 of them intended to vote in the election. Determine the additional number of voters that need to be sampled to construct a 95% interval with a margin of error equal to 0.06 to estimate the proportion. The region should sample ____ additional voters. B) Determine the sample size needed to construct a...
In the planning stage, a sample proportion is estimated as P = 99/110 = 0.90. Use this information to compute the minimum sample size n required to estimate p with 95% confidence if the desired margin of error E= 0.05. What happens to n if you decide to estimate p with 90% confidence? (You may find it useful to reference the z table. Round intermediate calculations to at least 4 decimal places and "z" value to 3 decimal places. Round...
Please show work step by step. thank you!
12. Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.028; confidence level: 99%; p and q unknown.
Question Help Determine the point estimate of the population proportion, the margin of error for the following confidence interval, and the number of individuals in the sample with the specified characteristic, x, for the sample size provided Lower bound 0.532, upper bound = 0.758, n = 1000 The point estimate of the population proportion is (Round to the nearest thousandth as needed.) The margin of error is (Round to the nearest thousandth as needed.) The number of individuals in the...
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