A teacher administers a standardized math test to his class of 75 students.The mean score (out of 300 possible points) is 235. From previous studies,you know the population standard deviation is 28. The principal has decidedthat she wants to estimate the average score to within 4 points (margin oferror = 4) with 99% confidence. If she can only administer the test to onerandom sample of students, how large should this sample be to achieve thedesired margin of error and confidence level?O A. 188 studentsO B. 75 studentsO C. 16 studentsD. 326 studentsO E. 325 students

We have given that Sample size (n) = 75 Sample mean (x̅) = 235 Standard deviations (σ) = 28 Margin…

Answered: A teacher administers a standardized…

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 sample of n = 15 scores has a mean of M = 6. One person with a score of X = 22 is added to the sample. What is the value for the new sample mean?

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