Answered: Nate believes that with his current…

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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Question

Nate believes that with his current internet subscription, he can download a 750 MB movie in just 14 minutes. In order to test his own claim , he took a random sample of 10 downloading times and obtained a mean of 15.45 minutes and a standard deviation of 1.75 minutes. Use 5% level of significance. Assume that the downloading time is normally distributed. What is (are) the critical region(s) of this test if we use 0.05 level of significance? (table value is 2.262)

one-sample one-tailed t-test

one-sample two-tailed t-test

one-sample one-tailed z-test

one-sample two-tailed z-test

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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