A simple random sample of 28 filtered 100-mm cigarettes is obtained from a normally distributed population, and the tarcontent of each cigarette is measured. The sample has a standard deviation of 0.20 mg. Use a 0.05 significance level to testthe claim that the tar content of filtered 100-mm cigarettes has a standard deviation different from 0.30 mg, which is thestandard deviation for unfiltered king-size cigarettes. Complete parts (a) through (d) below.a. Find the test statistic.x =(Round to three decimal places as needed.)b. Find the P-value of the test statistic.The P-value of the test statistic is.(Round to three decimal places as needed.)c. State the conclusion.V sufficient evidence to conclude that the tar content of filtered 100-mm cigarettes has aHọ. Therestandard deviation different from 0.30 mg.

a. From the provided information, Sample size (n) = 28 Sample standard deviation (s) = 0.20 mg…

Answered: A simple random sample of 28 filtered…

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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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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