You are conducting a test with the hypothesis Ho : u = 20 versus Ha : u > 20. Yourrandom simple sample of size 50 has a mean of 19.4 and standard deviation of 3.1.What is the observed significance level for this test?O 0.91310.9113O 0.08530.0869

here given , n= 50 sample mean = 19.4 sample standard deviation = 3.1

Answered: What is the observed significance level…

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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How do the Type I and Type II error rates of one-tailed and two-tailed tests differ?
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Researchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 Difference Score (Di) (Di - Mdiff)2 1 22 22 0 2 32 34 -2 3 24 25 -1 4 28 30 -2 5 26 29 -3 What is the observed test statistic (i.e., tobs)? Round to 2 decimal places.
Provide the general form of the Pearson goodness-of-fit test statistic. Р
Company records indicate that less than 24% of employees commute to work using public transportation. You suspect this is incorrect and for a sample of 157 employees, and find that 18% of them take public transportation to work. Test the claim using a 10% level of significance. What is the p-value for this test?
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