A local chess club claims that the length of time to play a game has a standard deviation of less than 11 minutes. Write sentences describing type I and type Il errorsfor a hypothesis test of this claim.A type I error will occur if the actual standard deviation of the length of time to play a game isV 11 minutes, but youthe nullhypothesis,A type Il error will occur if the actual standard deviation of the length of time to play a game is11 minutes, but youthe nullhypothesis,

For the given statement write type 1 and type 2 error

Answered: A local chess club claims that the…

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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For the situation described below, state the null hypothesis, Ho, and the alternative hypothesis, H, to be tested. (Enter != for # as needed.) A statistical test is designed to show that the proportionp of defectives has decreased below 0.6%. Ho: 0.6 H: 0.6
The personality variable extraversion is normally distributed in the population and has a mean of 10 and a standard deviation of 2. Researchers consider individuals who are 1 standard deviation above the mean “highly” extroverted. What is the probability that you can randomly sample 3 people from the population and all 3 would be “highly” extroverted?
Professor Nord stated that the mean score on the final exam from all the years he has been teaching is a 79%. Colby was in his most recent class, and his class’s mean score on the final exam was 82%. Colby decided to run a hypothesis test to determine if the mean score of his class was significantly greater than the mean score of the population. α = .01. What is the mean score of the population? What is the mean score of the sample? Is this test one-tailed or two-tailed? Why?
The weekly expenditure on groceries of a random sample of 100 family households was recorded. It was estimated that the mean expenditure was approximately $240. With rising interest rates and petrol prices, it was anticipated that grocery expenditure might decrease. Which hypothesis test would you use to test this claim? 1.One tailed, one sample t-test 2.Two tailed, one sample t-test 3.One tailed, z-test 4.One-tailed Paired Samples t-test 5.Chi Square
You are a consumer psychologist interested in holidy spending. A national census reports that the American family spent an average of μ = $81 for Halloween candy and costumes last year. A sample of N = 16 families this year produced a mean of $85 with s = 20 A) State your non-directional null and alternative hypothesis
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State the hypothesis and identify the directional test. In this example, the null hypothesis is Ho = 120,000. You may notice that the hypothesis used the phrase 'greater income' that is associated with greater than. Therefore, H, >120,000. This hypothesis uses inequality symbol (>) so it is one-tailed test and it uses greater than which specifically called for the right-tailed test. Họ : R= 120,000 and Hạ : l>120,000 (right-tailed test) 3. The average waiting time of all costumers in a restaurant before being served is less than 20 minutes. Determine the hypotheses and the directional test. You may notice that the hypothesis used the phrase 'less than' which denotes that the alternative hypothesis is Ha 121 Alternative Hypothesis: 4. The Bureau of Internal Revenue claims that the mean wait time for taxpayers during a recent tax filing is at most 8.7 minutes. A random sample of 11 taxpayers has a mean wait time of 8.7 minutes and a standard deviation of 2.7 minutes. Is there enough…
The mean of a random variable will be negative if all possible values of the random variable negative. O True O False

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