Answered: A recent national survey found that…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

A recent national survey found that high school students watched an average (mean) of 7.6 DVDs per month with a population standard deviation of 0.50 hour. The distribution of DVDs watched per month follows the normal distribution. A random sample of 41 college students revealed that the mean number of DVDs watched last month was 7.00. At the 0.05 significance level, can we conclude that college students watch fewer DVDs a month than high school students?

a)State the null hypothesis and the alternate hypothesis.

b)State the decision rule.

c)Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)

Value of the test statistic

d)What is your decision regarding H₀?

e)What is the p-value? (Round your answer to 4 decimal places.)

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.

Expert Solution