MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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We want to obtain a sample to estimate a population
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- You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=68.8. You would like to be 98% confident that your estimate is within 3 of the true population mean. How large of a sample size is required? Do not round mid-calculation. n=arrow_forwardI don't know how to solve it.arrow_forwardHello. I appreciate any help. Thanks.arrow_forward
- You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately o = 24.3 dollars. You would like to be 99% confident that your estimate is within 10 dollar(s) of average spending on the birthday parties. How many parents do you have to sample? n =arrow_forwardYou want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 61.8. You would like to be 99% confident that your estimate is within 5 of the true population mean. How large of a sample size is required? Hint: Video [+] n =arrow_forwardYou want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 79.4. You would like to be 99% confident that your estimate is within 5 of the true population mean. How large of a sample size is required? Hint: Video [+] n =arrow_forward
- You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 60.1. You would like to be 90% confident that your estimate is within 1.5 of the true population mean. How large of a sample size is required? Do not round mid- calculation. n =arrow_forwardYou want to obtain a sample to estimate a population mean. Based on previous evidence, believe the population standard deviation is approximately o = 71.3. You would like to be 95% confident that your estimate is within 3 of the true you population mean. How large of a sample size is required? Hint: Video [+1 n =arrow_forwardAn IQ test is designed so that the mean is 100 and the standard deviation is 17for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence that the sample mean is within 4 IQ points of the true mean. Assume that σ=17 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation. Part 1 The required sample size is. (enter your response here. )(Round up to the nearest integer.) Part 2 Would it be reasonable to sample this number of students? Yes. This number of IQ test scores is a fairly large number. No. This number of IQ test scores is a fairly large number. Yes. This number of IQ test scores is a fairly small number. No. This number of IQ test scores is a fairly small number.arrow_forward
- You want to obtain a sample to estimate a population mean age of the incoming fall term transfer students. Based on previous evidence, you believe the population standard deviation is approximately o = 5.6. You would like to be 99% confident that your estimate is within 2.4 of the true population mean. How large of a sample size is required? Do not round between steps. Use technology to find z-score. Give your answer in whole people. Make sure you use the correct rounding rule for samples size.arrow_forwardYou want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately o = 61.5 dollars. You would like to be 90% confident that your estimate is within 1.5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample? n =arrow_forwardYou want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 77.8. You would like to be 90% confident that your estimate is within 4 points of the true population mean. How large of a sample size is required? n = Submit Questionarrow_forward
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