Write the null and hypothesis for this test. The U.S. Census Bureau reported in 2002 that, for people 18-24 years old, the meanannual income for people who never married was $21,539 and for married peoplewas $19,321. Suppose that this information came from a survey of 100 people fromeach group. Is this evidence that people who never married earn more than peoplewho married?

Given that Population mean μ =21539

Answered: The U.S. Census Bureau reported in 2002…

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 teacher is comparing the mena study time of his freshmen and senior students. He believes that his senior students spend more time studyin per week than his freshmen studnet and decides to perform a hypothesis test on his belief. a. Suppose the decision of the hypothesis test is to reject the null hypothesis. If, in realiry, treshmen study for a mean of 10 hours per week and seniors study for a mena of 15 hours per week, was an error made? if so, what type? b. Suppose the decision of the hypothesis test is to fail to reject the null hypothesis. if, in realiry, freshmen study for a mena of 15 hours per seek and seniors study for a mean of 15 hours per week, was an error made? is so, what type?
Suppose the null hypothesis, Ho, is: the mean age of the horses on a ranch is 6 years. What is the Type lI error in this scenario? Select the correct answer below: O O O O You think the mean age of the horses on a ranch is 6 years when, in fact, it is. You think the mean age of the horses on a ranch is 6 years when, in fact, it is not. You think the mean age of the horses is not 6 years when, in fact, it is. You think the mean age of the horses is not 6 years when, in fact, it is not.
A researcher is conducting an experiment to evaluate a treatment that is expected to increase the scores for individuals in a population that is known to have a mean of ? = 80. The results will be examined using a one-tailed hypothesis test. Which of the following is the correct statement of the null hypothesis? ? < 80 ? ≥ 80 ? > 80 ? ≤ 80
The Chi-square test can be used with two or three variables. O TrueO False
When the x² statistic calculated in a x² test is very high, it means that: the results of the test are inconclusive the difference between the observed and expected values is likely due to a factor other than chance O the difference between the observed and expected values is likely due to chance alone there is no difference between the observed and expected values the experiment was set up incorrectly and should be repeated
A local chess club claims that the length of time to play a game has a mean of 11 minutes or more. Write sentences describing type I and type Il errors for a hypothesis test of this claim. A type I error will occur if the actual mean of the length of time to play a game is V 11 minutes, but you V the null hypothesis, A type Il error will occur if the actual mean of the length of time to play a game is 11 minutes, but you V the null hypothesis,
Select the appropriate null and alternative hypothesis for the following research question: People who see therapists have lower depression scores than people who do not see therapists? xbar1 = the average depression score for people who see a therapist xbar2 = the average depression score for people who do not see a therapist O Null Hypothesis: People who see a therapist have depression scores lower than or equal to people who do not see a therapist i.e. xbar1 xbar2 O Null Hypothesis: People who see a therapist have depression scores higher than or equal to people who do not see a therapist i.e. xbar1 >= xbar2 Alternative Hypothesis: People who see a therapist have depression scores lower than people who do not see a therapist i.e. xbar1 < xbar2
For the following null and alternative hypothesis describe the scenario of an instructor making a Type I Error Ho: A student is not cheating on an Exam H1: A student is cheating on an Exam
In a One-Sample Chi-Square Test (Goodness of Fit Test) you have both an independent and a dependent variable. True False
How to find nullityA
Which of the following is not one of the four steps of the hypothesis test? State the null and alternative hypotheses about the population parameter Make a decision to reject or not reject the null hypothesis State the level of significance, choose a test, and check the conditions for the test All of the above are steps of the hypothesis test
Imagine you are doing a Related-Samples t-test, and you are on Step Three of the hypothesis test. The sample of difference scores that you calculated is -5, -6, +2, -2, 0. What is the correct t-obtained? NOTE: The answer options also show many numbers that you calculate as part of the WORK for getting the t-obtained. VERY IMPORTANT HINT: The SS of these difference scores is 44.80.

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