11. Hypothesis test 1Imagine you are asked by your employer to study the possibility of a gender pay gap at your company. You find that men at your company are paid roughly $7,000 more than women and non-binary employees in similar roles. As part of your analysisyou conduct a hypothesis test and conclude that this difference is significant when compared to your choice of a = 0.1.Which of the following are implied by the above:Pick ONE optionYou should reject the null hypothesis that men are paid no differently than others.You should accept the null hypothesis that men at your company are paid no differently than others.You should reject the alternative hypothesis that men at your company are paid differently than others.You should accept the alternative hypothesis that men at your company are paid $7000 more than others.None of these are correct.

Answer:- Given, Men are paid roughly $7,000 more than women and non-binary employees in similar…

Answered: 11. Hypothesis test Imagine you are…

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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Problems pertain to the critical-value approach to hypothesis testing. Suppose that you want to conduct a left-tailed hypothesis test at the 5% signicfiance level. How must the critical value be chosen?
Samples of Republicans, Democrats, and Independents have been tested for their level of support for welfare reform and the null hypothesis has been rejected. What may we conclude? a. the difference is significant, there are differences between the parties on this issue b. the difference is significant, the parties are the same on this issue c. the difference is not significant d. a Type I error hoc
Read through this scenario and look at the data that was collected. State the null and all possible research hypotheses. Review the results below (I used SPSS) and answer the questions that follow. Scenario: A researcher wants to see if gender and / or income affects the total amount of help given to a stranger who is sitting on the side of a busy road with a sign asking for help. The independent variables are gender, income, and the interaction of gender and income. The dependent variable is total help. He wants to know if one or both factors – or the interaction of the two - affects the total amount of help offered. Because he is analyzing two independent variables (gender and income), he used a factorial ANOVA. His results show the main effect of each of the independent variables on the dependent variable (total help) and the interaction effect. The researcher is using a 95% confidence interval which means that he wants to be at least 95% sure that his independent variables…
Using the accompanying data of restaurant sales, determine if the vanance of weekday sales is the same as that of weekend sales for each of the three variables (lunch, dinner, and delivery). Click the icon to view the restaurant sales data. Is there sufficient evidence at the 0.01 level of significance to condude that the vanance of weekday sales is the same as that of weekend sales for lunch sales? Determine the null hypothesis, H. and the alternative hypothesis. H₁. Let weekend sales be population 1 and weekday sales be population 2. H₂ Hi 11 (Type integers or decimals. Do not round.) Compute the test statistic (Round to two decimal places as needed.) Survey data Date Day Lunch Sales $ Dinner Sales $ Delivery Sales $ 4-Apr Wednesday 358 789 293 11-Apr Wednesday 386 665 299 18-Apr Wednesday 426 628 289 25-Apr Wednesday 331 729 253 3-Apr Tuesday 296 848 325 10-Apr Tuesday 308 572 328 17-Apr Tuesday 297 568 358 24-Apr Tuesday 229 529 402 5-Apr Thursday 402 808 273 12-Apr Thursday 420…
3. A claim is made that the proportion of college students who have Netflix accounts is 0.85. Noah believes this claimed value is too high. He is able to survey a random sample of 240 college students, and he finds that the sample proportion who have Netflix accounts is 0.82. Noah proceeds to use this data to conduct a hypothesis test. Based on this information, which one of the following statements is correct? A. The p-value will be smaller than 0.01 but larger than 0. B. The p-value will be between 0.01 and 0.05. C. The p-value will be between 0.05 and 0.10. D. The p-value will be larger than 0.10.
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Question 6 In this exercise, we are conducting many hypothesis tests to test a claim. Assume that the null hypothesis is true. If 100 tests are conducted using a significance level of 5%, approximately how many of the tests will incorrectly find significance?Enter your answer in accordance to the question statement of the tests will find significance.
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A local teacher wants to see if teaching writing in different ways impacts student learning. She has two classes of similar characteristics. In one class, she will use Teaching Strategy A and in the other class she will use Teaching Strategy B. She ran her analysis in Microsoft Excel and received the following output table. If the P value is less than 0.05, the null hypothesis may be rejected. Based on the data table, what decision should the teacher make about the hypothesis?
Short answer. You are conducting a study on an effective therapy for borderline personality disorder (BPD). Your subjects are randomly assigned to one of three types of therapy: 20 sessions of CBT, 20 sessions of DBT, and 20 sessions of psychoanalysis. Participants are given the Diagnostic Interview for Borderlines-Revised (DIB-R) before and after the 20 therapy sessions, to assess treatment efficacy. Based on the literature around BPD, you hypothesize that the DBT group will see the greatest improvement in DIB-R scores. 1) What measure of central tendency should you use to assess the dependent variable? And what is a potential confounding variable in this case? 2) What is your null hypothesis? What is your alternative hypothesis? 3) Is it directional or non-directional? and what statistical test would you use to assess your data? Please Answer Questions Completely Do Not Leave Questions Unsolved
29. The General Social Survey polled 1280 men and 1531 women to determine their level of education. The results are presented in the following table. Can you conclude that education level is independent of gender? Use ? = 0.01 level of significance. No High School Diploma High School Diploma Associate’s Degree Bachelor’s Degree Graduate Degree Men 178 608 96 248 150 Women 186 827 128 259 131 (a) State the hypotheses. (b) State the test statistic. (c) Calculate the P-value. (d) Make a decision. (e) State the conclusion addressing the original claim.
You are management for a chain of department stores. Your analytics team believes that the proportion of months with lost sales for one of your department stores is 25%. You believe it is higher than this, so you gather some data for the last 4 years. You find that for 48 months there were 17 months where there were lost sales. Do you have enough evidence to doubt your analytics team? a) What is the null hypothesis? b) What is the alternative hypothesis? c) What is the claimed population proportion? d) What is the sample proportion (called the test statistic) e) What is the std deviation f) What is the z-value of the test statistic? g) What is the p-value h) What is the conclusion in words

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