latFind the minimum sample size n necessary to estimate a population proportion p with a 95% confidence intervalthat has a margin of error m = 0.02. Assume that you don't have any idea what p is so that you use the simpler formula forn (which comes from taking the more complicated formula for n and substituting p* = 0.5 into it).

The question is about sample size estimation.Given :Confidence level ( C ) = 0.95Margin of error ( E…

Answered: at Find the minimum sample size n…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The width of the confidence interval estimate of the population mean μ is a function of only two quantities: the population standard deviation σ and the sample size n
A previous study estimated the value of p to be 0.79. Find the minimum sample size required to ensure that your estimate (p) will be within 0.01 of p with 99.5% confidence. IMPORTANT: Use a critical value that you found with your calculator (not from a table), and round it 3 places after the decimal point before you plug it into a formula and perform your calculations. Do not round-off any other intermediate results. n=
At an art store, the mean sale amount is $1250 per customer. The owner thinks that the mean sales amount increases during promotion. A random sample of 45 paintings purchased during a promotion was selected, the sample mean sales amount is x¯=1315. Assume σ=$155. How can I implement the hypothesis test to check if the mean sales amount increases during promotion, and let α=0.01. I want to solve by both P-value method and reject region method.
# E DII C A previous study gave (0.11, 0.23) as a confidence interval for p. Find the minimum sample size required to ensure that your estimate (p) will be within 0.01 of p with 99% confidence. IMPORTANT: Use a critical value that you found with your calculator (not from a table), and round it to 3 places after the decimal point before you plug it into a formula and perform your calculations. Do not round-off any other intermediate results. n = F3 Submit Question $ 4 R F F4 V % 5 T J G F5 6 B Y H F6 & 7 X U N F7 - * PrtScn 8 F8 M K Home 9 F9 O End L F10 P Pg Alt
The minimum sample size needed to estimate a population mean within 2 units with a 95% confidence when the population standard deviation equals 8 is A. 62 OB. 9 C. 8 O D. 61 A random sample of 64 observations has a mean of 30. The population variance is assumed to be 9. The 85.3% confidence interval estimate for the population mean (to the third decimal place) is O A. (28.369, 31.631) O B. (29.383, 30.617) O C. (29.456, 30.544) O D. (28.560, 31.440)
Please answer this question for me because i do not understand how to work it.
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 19%. You would like to be 90% confident that your estimate is within 4.5% of the true population proportion. How large of a sample size is required? Hint: Video Z [+] n =
- Construct the 99% confidence interval for the difference μ₁ −μ₂ when x₁=476.88, x₂=318.32, s₁=42.11, s₂=26.80, n₁=19, and n₂=22. Use tables to find the critical value and round the answers to at least two decimal places. A 99% confidence interval for the difference in the population means is
A sample mean, sample standard deviation, and sample size are given. Use the one-mean t-test to perform the required hypothesis test about the mean, μ, of the population from which the sample was drawn. Use the critical-value approach. Sample mean = 7.1 s = 2.3 n = 18 α = 0.01 H0: µ = 10 H1: µ < 10 The decision is to the null hypothesis. (Enter R if you reject and enter F if you fail to reject)
A sample of n = 7 scores is selected from a population with an unknown mean ( µ). The sample has a mean of M = 40 and a variance of s 2 = 63. Which of the following is the correct 95% confidence interval for µ?
Plz help asap t4.
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 62.5. You would like to be 95% confident that your esimate is within 2 of the true population mean. How large of a sample size is required? n = Do not round mid-calculation. However, use a z value accurate to three decimal places - this is important for the system to be able to give hints for incorrect answers.

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