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 how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately σ=22.7σ=22.7 dollars. You would like to be 99% confident that your estimate is within 2 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?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 σ=39.3σ=39.3 dollars. You would like to be 90% confident that your estimate is within 5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?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 σ=35.5σ=35.5 dollars. You would like to be 90% confident that your estimate is within 4 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?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 σ=30.8σ=30.8 dollars. You would like to be 98% confident that your estimate is within 5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?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 σ=33.8σ=33.8 dollars. You would like to be 95% confident that your estimate is within 4 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?arrow_forwardWe want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population standard deviation is approximately σ=73.9. We would like to be 99% confident that the estimate is within 5 of the true population mean. How large of a sample size is required?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 σ=57.4σ=57.4. You would like to be 99% confident that your estimate is within 1.5 of the true population mean. How large of a sample size is required?arrow_forwardYou want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=55.5σ=55.5. 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?arrow_forwardWe want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population standard deviation is approximately σ=79.4σ=79.4. We would like to be 99% confident that the estimate is within 0.5 of the true population mean. How large of a sample size is required?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 σ=71.8σ=71.8. You would like to be 99% confident that your estimate is within 2.5 of the true population mean. How large of a sample size is required? 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 σ=72.1σ=72.1. You would like to be 99% confident that your estimate is within 2 of the true population mean. How large of a sample size is required?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 σ=49.7σ=49.7 dollars. You would like to be 95% confident that your estimate is within 4 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?arrow_forward
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