a. Using the critical value approach test the claim that the salaries from both universities are equal. Includeall key steps of the test. b. Use the four-step P-value approach and test the claim that the salaries from both universities are equal.c. Are the conditions met for using this test? A study was conducted to determine if the salaries of the professors from two neighbouring universities wereequal. A sample of 20 professors from each university was randomly selected. The mean from the first universitywas $109,100 with a population standard deviation of $2300. The mean from the second university was $110,500with a population standard deviation of $2100. Assume that the distribution of professor salaries, at bothuniversities, are approximately normally distributed. Level of significance = 0.05.

Let be the population mean salaries of the professors from two universities.Given that,

Using the critical value approach test the claim that the salaries from both universities are equal. Include all key steps of the test. b. Use the four-step P-value approach and test the claim that the salaries from both universities are equal. c. Are the conditions met for using this test?

Using the critical value approach test the claim that the salaries from both universities are equal. Include all key steps of the test. b. Use the four-step P-value approach and test the claim that the salaries from both universities are equal. c. Are the conditions met for using this test?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

What is the Testing Mean Difference and give an example about it. Explain the process of creating a hypothesis and which R codes to use. Lastly, explain how you would make a conclusion on your hypothesis based on your p-value.
How much do wild mountain lions weigh? Adult wild mountain lions (18 months or older) captured and released for the first time in the San Andres Mountains gave the following weights (pounds): 65 102 135 120 60 64 A USE SALT Assume that the population of x values has an approximately normal distribution. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean weight x and sample standard deviation s. (Round your answers to four decimal places.) Ib S = Ib (b) Find a 75% confidence interval for the population average weight u of all adult mountain lions in the specified region. (Round your answers to one decimal place.) lower limit Ib upper limit Ib
A researcher designs an intervention to combat anti-Arab oppression. She also designs a questionnaire to measure anti-Arab oppression so she can test the participants' level of anti-Arab oppression before and after the intervention. She tests one version of her questionnaire with 45 statements and a shorter version with 12 statements. In both questionnaires, the participants respond to each statement with a rating on a 5-point Likert scale with 0 equaling "strongly disagree" and 4 equaling "strongly agree." The overall score for each participant is the mean of his or her ratings for the different statements on the questionnaire. Look at the following graphs. Graph I graphs the results from the long version, and Graph II graphs the results from the short version. Graph I Graph II PARTICIPANTS PARTICIPANTS 8 8 7 7 6 6 4 4 3 3 2 1 1 1 2 3 4 2 4 LONG QUESTIONNAIRE SCORE SHORT QUESTIONNAIRE SCORE Complete the following sentences by trusting your eyes to see meaningful differences in the two…
Express the alternative hypothesis in symbolic form. A psychologist claims that the mean amount of time (in hours) that females spend in talk therapy is more than that of men. Assume that two samples are independent. Let the female talk therapy times be the first population and the male talk therapy times be the second population.
Comment on the P-value for testing the claim p1- p2=0
Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 410 randomly selected adults showed that 57% of them would erase all of their personal information online if they could. Find the value of the test statistic.
Does the type of instruction in a college statistics class (either lecture or self-paced) influence students’ performance, as measured by the number of quizzes successfully completed during the semester? Twelve students were recruited for the study. Students received the lecture instruction or a self-paced instruction. The total number of quizzes completed during teach type of instruction appear below.
claim: Most adults would not erase all of their personal information online if they could. A software firm survey of 585 randomly selected adults showed that 49.3% of them would erase all of their personal information online if they could. Make a subjective estimate to decide whether the results are significantly low or significantly high, then state a conclusion about the original claim.