MATLAB: A Practical Introduction to Programming and Problem Solving
MATLAB: A Practical Introduction to Programming and Problem Solving
5th Edition
ISBN: 9780128154793
Author: Stormy Attaway Ph.D. Boston University
Publisher: Elsevier Science
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Chapter 14, Problem 44E
To determine

To write:

A MATLAB code that approximates the area under curve 4x2+3 from x=1 to x=3 by first creating an anonymous function and then passing its handle to the quad function.

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- Ho=25 H:25 x = 28.1, n = = 55, σ = 8.47, α = .01 a. Use the data given to test the following hypotheses. (Round your answer to 2 decimal places, e.g. 15.25.) The value of the test statistic is and we b. Use the p-value to reach a statistical conclusion. (Round your answer to 4 decimal places, e.g. 0.1254.) Since the p-value of is than a/2 = .005, the decision is to: Appendix A Statistical Tables c. Using the critical value method, what are the critical sample mean values? (Round your answer to 3 decimal places, e.g. 15.254.) Critical mean values: Upper value: Lower value:
The customer help center in your company receives calls from customers who need help with some of the customized software solutions your company provides. Your company claims that the average waiting time is 7 minutes at the busiest time, from 8 a.m. to 10 a.m., Monday through Thursday. One of your main clients has recently complained that every time she calls during the busy hours, the waiting time exceeds 7 minutes. You conduct a statistical study to determine the average waiting time with a sample of 35 calls for which you obtain an average waiting time of 8.15 minutes. If the population standard deviation is known to be 4.2 minutes, and a = 0.05, the p-value is approximately 0.05 0.025 ○ 0.053 ○ 0.10 ○ 0.026
The procedures for doing hypothesis testing of proportions and hypothesis testing of means are similar, but what is one of the differences they have ?
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