You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=56.7σ=56.7. You would like to be 98% confident that your estimate is within 1.5 of the true population mean. How large of a sample size is required? Round up to nearest whole number.n =

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

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Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: Given information- Confidence interval = 0.90 Significance level (α) = 1- 0.90 = 0.1 Error (E) = 4…

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

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Q: Suppose you select a sample of 2,000 high school seniors' verbal SAT scores. The mean and standard…

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Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

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Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: given data  σ = 65.198% ci for μ. E = 2n = ?

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: Given: σ=80.5 The margin of error E = 2 Confidence level =99%

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: Given information- Population standard deviation, σ = 67.6 Confidence interval = 0.90 Significance…

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: Since we know population standard deviation, use z-distribution to find z-critical value. Find…

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

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Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe t…

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Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: From the provided information, Standard deviation (σ) = 77.8 Confidence level = 90% Margin of error…

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

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Q: We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers…

A: The margin of error is defined as  MOEγ=zγ×σnwhere, zγ is the z-score,σ is the population standard…

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

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Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A:

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

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Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: Population standard deviation, sigma is 67.2. The z-critical value for 99% confidence interval is…

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: Solution: Given:                      Population standard deviation σ = 70.9 dollars…

Q: believe the population standard deviation is approximately o = 25.8. We would like to be 99% cont…

A: It is given that  σ = 25.8 Margin of error, E = 1.5 Confidence level = 99%

Q: you want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

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Q: nswer  the question. Show all the steps, not only the final answer. if possible, sketch a little…

A: claim : μ = 2350n = 30x¯ = 2315σ = 38α = 0.05

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: Since we know population standard deviation, use z-distribution. Find z-critical value: Area on…

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A:

Q: want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the…

A: Given Standard deviation=20.8 Margin of error= 1

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: Since we know population standard deviation, use z-distribution to find z-critical value. Area on…

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A:

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A:

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A:

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: I will use excel to solve this problem (Since it's given Do not round mid-calculation.)…

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: Here we need to find the  required sample size at a 99% confidence level. Given SD=45.5 and margin…

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: I will use excel to solve this question.…

Q: We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers…

A:

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

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Q: We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers…

A: Suppose μ is the population mean.

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: formula for the sample size needed to estimate a population mean is

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: Since population standard deviation is known, use z-distribution to find the critical value.

Q: ou want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

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Q: population mean. Based on previous evidence, you believe the population standard deviation is…

A: We have given that,  Margin of error (E) = 3, population standard deviation (σ) = 25.7 and…

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: σ=21.9E = 1.595% confidence level

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: The margin of error is given by, Z*σnwhere σ=populationb standard deviation            n=sample size

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: From the given information, Standard deviations (σ) = 38.5 dollars Significance level (α) = 0.10…

Q: ou want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: Given that, Critical value: Using the z-table, the critical value at 95% confidence level for two…

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

A: It is given that the population standard deviation is 31.5 and the margin of error (E) is 2.5.

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

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Q: ou want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: σ =   43.498% confidence interval for μ.E = 1n = ?

Q: A normal population has mean u = 58 and standard deviation o = 8.. What is the 83rd percentile of…

A: Here we need to find the 83rd Percentile of the given normal distribution.

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based…

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.