The Graduate Record Exams (GRE) quantitative section has a population mean of 152.6 and population standard deviation of 8.8.random sample of 48 individualsMean GRE quantitative section of the sample to be 155.Assume we are conducting a two-tailed hypothesis test at an alpha = .05 level.Write the null hypothesis in symbols and words. Write the alternative hypothesis in symbols and wordsHow do you calculate the test statistic. How do you compute the p-value using softwareMake a decision about the null using the critical value approach. Make a decision about the null using the p-value approach

Population mean : µ = 152.6 Population standard deviation : σ = 8.8 Random sample (n = 48) Two…

Answered: The Graduate Record Exams (GRE)…

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Graduate Record Exams (GRE) quantitative section has a population mean of 152.6 and population standard deviation of 8.8.

random sample of 48 individuals

Mean GRE quantitative section of the sample to be 155.

Assume we are conducting a two-tailed hypothesis test at an alpha = .05 level.

1. Write the null hypothesis in symbols and words. Write the alternative hypothesis in symbols and words
2. How do you calculate the test statistic. How do you compute the p-value using software
3. Make a decision about the null using the critical value approach. Make a decision about the null using the p-value approach

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We used a one-tailed test instead of a two-tailed test.
1. Rewrite the alternative hypothesis (in words and symbols) to reflect a one-tailed test
2. What would the p-value be? What decision would you make?
3. Does this agree with the decision from the two-tailed test?

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