MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Use the given data to find the minimum sample size required to estimate the population proportion. Margin of Error: 0.058; confidence level: 90%; and unknown sample proportion p^.
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- Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.013; confidence level: 95%; from a prior study, (p_hat) is estimated by the decimal equivalent of 63%.arrow_forwardUse the margin of error of 5, confidence level of 98%, and o=30, find the minimum sample size required to estimate a normal distribution population mean µ.arrow_forwardPlease see below. Note that I am only given one attempt at this and I believe that the answer I have may not be correct. In selecting the sample size to estimate the population proportion pp, if we have no knowledge of even the approximate value of the sample proportion p̂ p^, we:A. take two more samples and find the average of their p̂ p^B. let p̂ =0.95p^=0.95C. let p̂ =0.50p^=0.50D. take another sample and estimate p̂ p^ Under which of the following circumstances is it impossible to construct a confidence interval for the population mean?A. A normal population with a large sample and a known population variance.B. A normal population with a small sample and an unknown population variance.C. A non-normal population with a large sample and an unknown population variance.D. A non-normal population with a small sample and an unknown population variance.arrow_forward
- Determine the sample size required to estimate a population mean to within 11 units given that the population standard deviation is 50. Use a confidence level of 95%. Sample Size =arrow_forwardDetermine the most conservative sample size for 95% confidence interval estimation of the population proportion with maximum error of 0.04.arrow_forwardA sample of 20 automobiles has a pollution by-product release standard deviation of 2.5 ounces when one gallon of gasoline is used. Find the 95% confidence interval of the population variance. using chi table determine the confidence interval of the true population variancearrow_forward
- ou intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 6.a.) The degrees of freedom df=df=b.) Use the t-table on page 4 to find the critical value tctc that corresponds to a confidence level of 95%.tc=(Use 4 decimal places)arrow_forwardFind the critical value X 2/R corresponding to a sample size of 6 and confidence level of 95 percentarrow_forward
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