Answered: ze n1=305n1=305 from the first…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

You wish to test the following claim (HaHa) at a significance level of α=0.10α=0.10. Ho:p1=p2Ho:p1=p2
Ha:p1>p2Ha:p1>p2 You obtain 269 successes in a sample of size n1=305n1=305 from the first population. You obtain 384 successes in a sample of size n2=479n2=479 from the second population. For this test, you should NOT use the continuity correction, and you should use the normal distribution as an approximation for the binomial distribution.

What is the z-score of the critical value? (Report answer accurate to three decimal places.)

What is the standardized test statistic for this sample? (Report answer accurate to three decimal places.)

The test statistic is...

in the critical region
not in the critical region

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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