A simple random sample of IQ scores is selected from a normally distributed population of statistics professors. Thesample statistics are n = 19, x = 131, s = 11. Determine the critical value of t and the margin of error, and then constructthe 95% confidence interval estimate for the population mean.The critical value is t=☐(Round to three decimal places as needed.)exampleGet r

We have given that, sample mean (x̄) = 131, sample standard deviation (s) = 11 and sample size (n)…

Answered: A simple random sample of IQ scores is…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Use the given data to construct a confidence interval for the population proportion p of the requested level. =x53 , =n68 , confidence level 80% Round the answers to at least three decimal places.
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1538 and the standard deviation was 314. The test scores of four students selected at random are 1970, 1280, 2260, and 1430. Find the z-scores that correspond to each value and determine whether any of the values are unusual. .... The z-score for 1970 is (Round to two decimal places as needed.) The z-score for 1280 is (Round to two decimal places as needed.) The z-score for 2260 is (Round to two decimal places as needed.) The z-score for 1430 is. (Round to two decimal places as needed.) Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice. O A. The unusual value(s) is/are (Use a comma to separate answers as needed.) O B. None of the values are unusual.
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find the value:
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