A large manufacturing firm is being charged with discrimination in its hiring practices. (a) What hypothesis is being tested if a jury commits a type I error by finding the firm guilty? (b) What hypothesis is being tested if a jury commits a type II error by finding the firm guilty?

A large manufacturing firm is being charged with discrimination in its hiring practices. (a) What hypothesis is being tested if a jury commits a type I error by finding the firm guilty? (b) What hypothesis is being tested if a jury commits a type II error by finding the firm guilty?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Is there a difference in the car brand's countries for Midwesterners and people from the west coast? Of the 193 randomly selected Midwesterners surveyed 60 had an American car, 110 had a car from Asia, and 23 had a cars from another country. Of the 151 randomly selected people from the west coast who were surveyed, 45 had an American car, 74 had a car from Asia, and 32 had a car from outside of the US and Asia. Conduct the appropriate hypothesis test using an a = 0.10 level of significance. a. What is the correct statistical test to use? O Homogeneity O Independence O Goodness-of-Fit O Paired t-test b. What are the null and alternative hypotheses? Ho: O The distribution of car brand's countries is not the same for Midwesterners and people from the west coast. Address and car brand's countries are independent. O The distribution of car brand's countries is the same for Midwesterners and people from the west coast. O Address and car brand's countries are dependent. H1: O Address and car…
I have had 3 different people tell me this answer is right, yet it is saying it's wrong. Can someone PLEASE give me the right answer?
a. In general terms, why is it necessary to consider the degree of freedom? b. In general terms, what is the difference between a one-tailed and a two-tailed hypothesis test? c. In general terms, what is the alternative hypothesis?
What calculator button would be used to perform a hypothesis test if the null and alternative hypothesis are as follows: Ho: P₁ = P2 H₁ P₁ P2 Select one: O a. Z-Test... O b. 2-SampZTest... O c. T-Test... O d. 2-SampTTest O e. 2-PropZTest...
2. Can hypothesis testing ever prove a hypothesis true? How should we interpret an experiment where we fail to reject the null hypothesis?
a) The null hypothesis for this test would be: b) The alternative hypothesis? c) What is the value of the test statistic, Z?
Is there a difference in the car brand's countries for Midwesterners and people from the west coast? Of the 170 randomly selected Midwesterners surveyed 50 had an American car, 100 had a car from Asia, and 20 had a cars from another country. Of the 159 randomly selected people from the west coast who were surveyed, 44 had an American car, 81 had a car from Asia, and 34 had a car from outside of the US and Asia. Conduct the appropriate hypothesis test using an αα = 0.05 level of significance. What is the correct statistical test to use? Goodness-of-Fit Independence Paired t-test Homogeneity What are the null and alternative hypotheses?H0:H0: Address and car brand's countries are dependent. The distribution of car brand's countries is not the same for Midwesterners and people from the west coast. Address and car brand's countries are independent. The distribution of car brand's countries is the same for Midwesterners and people from the west coast. H1:H1: The distribution…
To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the course. The results are given below. Student Exam Score Before the Course Exam Score After the Course 1 720 700 2 740 770 3 900 950 4 700 710 5 500 580 6 840 900 7 820 840 8 640 650 Use an appropriate hypothesis test, at 0.05 level of significance, to determine whether there is evidence of a difference between before and after scores of the students. What assumption is necessary to perform the hypothesis test in (a)? Construct a 95% confidence interval estimate of the mean difference in before and after scores. Interpret the interval. What is your decision based on this confidence interval estimate?
5. Conclusions True or false: In hypothesis testing, it is never valid to form a conclusion of supporting the null hypothesis.
Describe the four possible outcomes when conducting a hypothesis test.
19. A campaign team for a candidate running for local office uses a random survey. They are interested in using a hypothesis test to see if there is strong evidence that their candidate will obtain more than 50% of the vote and win the election. Which of the following descriptions would represent a Type I error? d) e) a) b) c) The campaign team rejects the null hypothesis and concludes that the candidate will win more than 50% of the vote, but then the candidate loses the election. The campaign team fails to reject the null hypothesis and concludes that there is not enough evidence to conclude that their candidate has more than 50% of the vote, but then the candidate wins the election. The campaign team fails to reject the null hypothesis and concludes that the candidate will win more than 50% of the vote, but then the candidate loses the election. The campaign team rejects the null hypothesis and concludes that there is not enough evidence to conclude that their candidate has more…
7. You have seen this question before. Human volunteers were asked to try five types of meat products. One of these was dog food; the others were various types of pâté. The volunteers were asked which of the five was their favorite. Two out of 18 volunteers chose the dog food. Is there evidence that people prefer human food over dog food? Show all four steps of hypothesis testing.