**Exercise 07.56 Algo (Sampling Distribution of x)**A researcher reports survey results by stating that the standard error of the mean is 20. The population standard deviation is 600. Use the z-table.a. How large was the sample used in this survey?[Input box]b. What is the probability that the point estimate was within ±25 of the population mean? (to 4 decimals)[Input box]*Note: Make use of the z-table for calculations.***Icon Key:**[Various icons, not visible in this transcription]

The standard error of the mean is, Thus sample size required is 900.

Hint(s) A researcher reports survey results by stating that the standard error of the mean is 20. The population standard deviation is 600. Use z-tab a. How large was the sample used in this survey? b. What is the probability that the point estimate was within 25 of the population mean? (to 4 decimals)

Hint(s) A researcher reports survey results by stating that the standard error of the mean is 20. The population standard deviation is 600. Use z-tab a. How large was the sample used in this survey? b. What is the probability that the point estimate was within 25 of the population mean? (to 4 decimals)

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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