2.3.The Tippie College of Business obtained the following results on the salaries of a recent graduating class:4.Finance MajorsBusiness Analytics Majors140= 305.I2 = $56,474$13,500T1 = $48,014%3D6.81 = $18,500827.a. Formulate hypotheses so that, if the null hypothesis is rejected, we can conclude that salaries for Finance majors are significantly lower than the salaries of Business Analytics8.majors. Use a = 0.05.9.Ho : H1 - H2- Select your answer -10.H. : H1 - 42Select your answer -b. What is the value of the test statistic? Enter negative value as a negative number, if any.(rounded to 2 decimals)c. What is the p-value?df =168 (rounded down to nearest whole number)%3Dp-value(rounded to 3 decimals)d. What is your conclusion?- Select your answer vthat the salaries of Finance majors are lower than the salaries of Business Analytics majors.CSwith CamScanner

Answered: Image /qna-images/answer/824e8afd-c595-4f19-bcdf-8baf7a3e4bc2.jpg

Answered: The Tippie College of Business obtained…

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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In Chapter 17 Data Set 5, you will find entries for two variables: age category (young, middle-aged, and old) and strength following weight training (weak, moderate, and strong). Are these two factors independent of one another? Strength Weak Moderate Strong Age Young 12 18 22 Middle 20 22 20 Old 9 10 5 What is the null hypothesis in words? (You will need to get this from lecture and/or the lecture notes. It is not covered in your text). What is the alternative hypothesis in words? (See note in a. above) What is your degrees of freedom for the test? How did you arrive at this answer? Based on c. above and using an alpha =.05, what is the critical value for the test? Use PSPP/SPSS to calculate the Chi Square value. Use the instructions on pages 304-305. Copy/paste the output table. (result in the pictures) What is the Chi Square value? What is the p-value? Based on f., do…
Suppose a political science student wants to know whether gender is related in some way to Americans' views on environmental-protection standards. Since this student has an internship at the Environmental Protection Agency (EPA), he asks a simple random sample of 72 EPA employees whether they feel that current environmental regulations are adequate or inadequate. The student summarizes his data in a contingency table so that he can analyze it with a chi-square test for independence. Men Women Adequate 10 16 Inadequate 13 33 The requirements for a chi-square test for independence are not met because the sample is biased. at least one expected cell count is less than 1. either the row or column totals are not random. the categories overlap or do not contain all sample members. the observations are not independent.
Perform a hypothesis test at a 5% level of significance to see if the proportion of white individuals who are fatally shot by police is less than the total proportion of white individuals in the United States, which is approximately 60.1% according to the U.S. census bureau. State your null and alternative hypotheses in mathematical notation
The Personnel Manager of a large corporation believes that regular physical exercise leads to a lower resting pulse rate (and so healthier staff). Data was collected on resting pulse rate and whether or not people exercised regularly for a random sample of 22 employees of the corporation. The results are given below. Exercise regularly Do not exercise regularly 72 62 72 60 63 75 64 60 52 64 80 68 64 84 66 72 62 84 76 60 78 84 (a) Formulate appropriate hypotheses to test if the average resting pulse rate is lower in employees who regularly exercise compared with those who do not. (b) Perform a parametric test of the above hypotheses and draw conclusions based on the P-value of the test. (c) Perform a non-parametric test to analyze the same data. (d) State all underlying assumptions for the tests in parts (b) and (e) and comment on the similarities/differences in the outcomes of the tests.
You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 72% at a level of significance of a = 0.10. According to your sample, 63 out of 83 potential voters prefer the Democratic candidate. a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: v Select an answer v (please enter a decimal) H1: ? v Select an answer v (Please enter a decimal) c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly different from 72% at a = 0.10, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different from 72%. O The data suggest the…
Economy in Recession? The Quinnipiac University Poll conducts nationwide surveys as a public service and for research. This problem is based on the results of one such poll. Independent simple random samples of registered Democrats, Republicans, and Independents were asked, “Do you think the United States economy is in a recession now?” Of the 628Democrats sampled, 220 responded “yes,” as did 349 of the 471 Republicans sampled and 342 of the 646 Independents sampled. At the 1% significance level, do the data provide sufficient evidence to conclude that a difference exists in the percentages of registered Democrats, Republicans, and Independents who thought the U.S. economy was in a recession at the time?
The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514.1 SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. College Grads High School Grads 501 471 442 492 534 533 580 478 634 526 479 425 554 426 486 485 534 515 528 390 556 594 524 535 481 464 592 453 (a) Formulate the hypotheses that can be used to determine whether the sample data support the hypothesis that students show a higher population mean math score on the SAT if their parents attained a…
A company is evaluating the knowledge retention of their fiscal policy training program by administering a quiz to a randomly selected sample of 16 employees both one week after completing training and 6 months after completing the training. Employee scores are shown in the Excel file. Has there been a significant reduction in knowledge of the fiscal policy six months after completing training? State the five hypothesis testing steps to answer this question. Employee 1 2 3 45 6 7 8 9 10 0 12 3 4 5 6 11 13 14 15 16 One week after 69 80 73 100 100 50 77 64 94 100 100 100 100 47 67 63 Six months after 70 79 77 97 95 50 60 64 84 90 80 99 94 57 58 68
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A researcher wants to study the relationship between salary and gender. She randomly selects 218 individuals and determines their salary and gender. Can the researcher conclude that salary and gender are dependent? Income Step 1 of 8: State the null and alternative hypothesis. Male Below $25,000 18 $25,000-$50,000 35 23 $50,000-$75,000 26 60 Above $75,000 26 18 105 113 Female Total 12 30 58 86 44 218 Total Copy Data
According to the Centers of Disease Control, about 22% of American young people between the ages of 12 and 19 are obese.A student claims that the students in his local schools are in better shape than the national average, so their proportion of obese students is less than 22%. Which are the appropriate null and alternative hypotheses for this study? H0: p = 22%, HA: p < 22% H0: p ≠ 0, HA: p = 0 H0: p = 22%, HA: p > 22% H0: p = 22%, HA: p ≠ 22% Suppose that the result is to Fail to reject H0.Which is the proper conclusion? There is sufficient evidence to support the claim that the students at his local schools have a smaller proportion of obese students. There is not enough information to answer this question. There is not sufficient evidence to support the claim that the students at his local schools have a smaller proportion of obese students.
According to the Centers of Disease Control, about 22% of American young people between the ages of 12 and 19 are obese.A student claims that the students his local schools are in better shape than the national average, so their proportion of obese students is less than 22%. Which are the appropriate null and alternative hypotheses for this study? H0: p = 22%, H1: p ≠ 22% H0: p ≠ 0, H1: p = 0 H0: p = 22%, H1: p < 22% H0: p = 22%, H1: p > 22% Suppose that the result of the statistical is to reject H0.Which is the proper conclusion? There is not sufficient evidence to conclude that the students at his local schools have a smaller true proportion of obese students. There is sufficient evidence to conclude that the students his local schools have a smaller true proportion of obese students. There is not sufficient evidence to conclude that the students at his local schools have a smaller sample proportion of obese students. There is sufficient evidence to conclude that the…

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