MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Explain Standard Error of the Sampling Distribution.
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- When does random sampling occur?arrow_forwardMost graduate schools of business require applicants for admission to take the Graduate Management Admission Council's GMAT examination. Scores on the GMAT are roughly normally distributed with a mean of 527 and a standard deviation of 112arrow_forwardCompute the sample variance for y = {2,26,24,40,-12,-6,10,28}arrow_forward
- Suppose the true proportion of voters in the county who support a specific candidate is 0.43. Consider the sampling distribution for the proportion of supporters with sample size n = 127. What is the mean of this distribution? What is the standard error of this distribution? Please round to at least 3 significant figures.arrow_forwardDescribe about the Pooled Variance Estimate.arrow_forwardWhat is the mean of the sampling distribution? (round to 3 decimal places)arrow_forward
- Suppose that 80% of apples are worm-free. Explain why it would not be unusual to find 84% of a simple random sample of 120 apples to be worm-free but it would be unusual to find 84% of a simple random sample of 480 apples to be worm-free. Use facts about the sampling distributions of sample proportions when n = 120 and when n = 480 to support your explanation.arrow_forwardSuppose the true proportion of voters in the county who support a specific candidate is 0.52. Consider the sampling distribution for the proportion of supporters with sample size n = 142.What is the mean of this distribution? What is the standard error of this distribution?arrow_forwardWhat is left skewed distributionarrow_forward
- Explain the conditions to compute the standard deviation of the sampling distribution of the mean?arrow_forward4. True or False The standard error for the sampling distribution of the mean is equal to Vn.arrow_forwardThe distribution used for small sample size (n<30) changes based on the size of the sample. True Falsearrow_forward
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