
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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What value of z would you use to calculate the 98% confidence interval for a population
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- Compute a confidence interval (95% interval, 2-tailed) for a mean. Data: sample mean = 38.5; sample standard deviation=8; N= 22. CL=arrow_forwardFind the critical value, for a 90% confidence when the sample size is 22arrow_forwardA 90% confidence interval for a population mean is (10, 20). What is the margin of error of the interval?arrow_forward
- A random sample of 500 observations yields x̅ =400 and s=50. What is the 95% confidence interval for the population mean?arrow_forwardFor a 95% confidence interval and n=21 give the Chi-squared right value.arrow_forwardFind the critical value for the population mean if there are 135 cats in a sample and you want an 87% confidencearrow_forward
- do the last one pleasearrow_forwardSuppose you calculate a 99% confidence interval of 14.1 to 21.84. Determine the margin of error.arrow_forwardFor a group of 20 students taking a PSDTF test, the mean heart rate was 96 beats per minute, and the standard deviation was 5. Find the 95% confidence interval of the true mean.arrow_forward
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