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Description: Which of the following will you do to reduce the chance of making a Type Il error?Decrease the sample sizeLower the alpha levelIncrease the alpha levelIncrease the sample sizeYour answer

Math

Statistics

Which of the following will you do to reduce the chance of making a Type Il error? Decrease the sample size Lower the alpha level Increase the alpha level Increase the sample size

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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A middle school teacher believes that a reading rewards program results in a higher number of pages read per year after the program is completed. The teacher chooses a simple random sample of students and records the number of pages read per year before starting the program and after the program is completed. The results of the study are below. What are the population parameters? Pick Mean Variance Observations Hypothesized Mean Difference df t Stat P(T<=t) one-tail t Critical one-tail P(T<=t) two-tail t Critical two-tail Confidence Level Before 813.25 192250.25 182875.22 100 100 0 198 1.497 0.068 1.653 0.136 1.972 95% After 904.95 What is the level of significance? Ex: 0.12 Is the two-sample hypothesis test a paired or unpaired t-test? Pick The null hypothesis is Ho: after Pick The alternative hypothesis is Ha : Mafter Pick Should Ho be rejected or does Ho fail to be rejected? Pick What conclusion can be drawn from the data? Pick Mbefore before ✓evidence exists to support the claim…
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Test the claim that the proportion of people who own cats is smaller than 70% at the 0.1 significance level.The alternative hypothesis would be: p<0.7p<0.7 p≠0.7p≠0.7 μ>0.7μ>0.7 μ<0.7μ<0.7 μ≠0.7μ≠0.7 p>0.7p>0.7 The test is: left-tailed right-tailed two-tailed Based on a sample of 600 people, 66% owned catsThe test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)Based on this we: Fail to reject the null hypothesis Reject the null hypothesis
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