
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A random sample of n = 300 measurements is drawn from a binomial population with
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- deniation 4. About 10% of people in the United States do not wear a seat belt. Suppose we plan to select a random sample of 180 U.S. residents. Let = the proportion of people in the sample who do not wear their seat belt. a. Calculate the mean and standard deviation of the sampling distribution of p. b. Interpret the standard deviation. c. Justify that the sampling distribution of p is approximately normal. d. What is the probability that at least 15% of the individualsarrow_forward24arrow_forwardK Among a random sample of 150 employees of a particular company, the mean commute distance is 25.2 miles. This mean lies 1.7 standard deviation(s) below the mean of the sampling distribution. In a second sample of 150 employees selected from the same company, the mean commute distance is 31.7 miles. This second sample mean lies 2 standard deviation(s) above the mean of the sampling distribution. If a third sample of 150 employees is selected, what is the probability that the sample mean will lie between 25.2 and 31.77 OA. 0.9772 OB. 0.045 OC. 0.933 OD. 0.022arrow_forward
- Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best point estimate for p, the margin of error, and the confidence interval. Assume the results come from a random sample.A 95% confidence interval for the proportion who will answer ‘‘Yes” to a question, given that 63 answered yes in a random sample of 90 people.Round your answers to three decimal places.Point estimate = .Margin of error =±.The 95% confidence interval isarrow_forwardUsing the data attached, compute x-bar: 1. Define the random variable x-bar in words 2. state the estimated distribution to use. Use both words and symbols.arrow_forward4. True or False The standard error for the sampling distribution of the mean is equal to Vn.arrow_forward
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