Answered: A survey of go randomly selected hotels…

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

A survey of go randomly selected hotels in each city found that the average hotel room rate in New Delhi is
$88.42 and the average room rate in Mumbai is $80.61, with standard deviations of, in New delhi, $5.62 and,
in Mumbai, $4.83. Assume that room rates are normally distributed in each city.
a. Test at o.05 level of significance whether the two population variances differ.
b. Based on your results of part a, use the appropriate case to test whether average room rates
differ at a = 0.05
c. Construct a 95% confidence interval to estimate the difference in the two population means.
d. Explain how the 95% confidence interval could be used to test the hypotheses in part b at a = 05, and
come to the same conclusion.

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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