In another study conducted in 2016, the average of monthly salaries of 45 randomly chosen residents...
In another study conducted in 2016, the average of monthly salaries of 45 randomly chosen residents in Bordeaux was found to be €3200; the sample standard deviation of the chosen salaries was €600. The suspicion was that the average salary of residents in Paris is lower than the average salary of residents in Bordeaux.
The research team was to conduct a t-test to test the suspicion. But they had no information on the two population variances. So they first conducted an F-test at a significance level of 5% to determine if the two population variances are equal or not, assuming that both populations were normal. Set 1 = Paris; 2 = Bordeaux.
Question 8: Set up the alternative hypothesis for the F-test.
question 9: In the F-test, what is the test statistic?
Question 10: Find the rejection region in the F-test.
Question 11: What is the conclusion?
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In another study conducted in 2016, the average of monthly
salaries of 45 randomly chosen residents...
In a study of monthly salary distribution of residents in Paris conducted in year 2015, it...
In a study of monthly salary distribution of residents in Paris conducted in year 2015, it was found that the salaries had an average of €2200 (EURO) and a standard deviation of €550. Assume that the salaries were normally distributed. Question 1: Consider sampling with sample size 64 on the above population. Compute the mean of the ̅ sampling distribution of the mean (?). Question 2: Compute the standard deviation of the sampling distribution of the mean in Question 1...
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I need help on question 3! Problem 2: salaries of lawyers and doctors, mean edition An...
I need help on question 3!
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Two random samples are chosen from the corresponding populations. Assume that these two samples are totally...
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2. Two random samples are chosen from the corresponding populations. Assume that these two samples are...
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plz answer from a to g A randomized block design yielded the ANOVA table to the...
plz answer from a to g
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Data about salaries showed that staff nurses in Tampa earn less than staff nurses in Dallas (The Tampa Tribune, Jan 15. 2007). You are a manager at a Tampa hospital and want to test the claim of the Tribune. You wish to test the claim at a significance level of a = 0.001. So you conduct a follow up survey of 25 staff nurses in Tampa and 22 staff nurses in Dallas. You find that the sample from Tampa showed...
I need help on question 3!
Problem 2: salaries of lawyers and doctors, mean edition An experiment is conducted to determine whether the mean salary for doctors and lawyers is the same. 13 doctors are sampled IID and their salaries are assumed to come from a normal distribution. 11 lawyers are sampled IID and their salaries are assumed to also come from a normal distribution. For time being, assume the variances in salary are the same for the doctor and...
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Two random samples are chosen from the corresponding populations. Assume that these two samples are totally independent. The measurements obtained are as fol- lows: Sample 1 10.6 10.2 10.5 10.3 10.8 9.810.6 10.7 10.2 10.0 Sample 2 9.9 9.8 9.6 10.1 10.2 10.1 9.7 9.5 9.6 9.8 Perform a test to determine whether the population means are significantly different from each other at .05. (a) Perform a test for the homogeneity of variance between the two groups. Please set up...
6. (30 points) It was traditionally accepted that you could get 120 calories on average from a serving of vanilla yogurt. In 2016 a new diet guide claims that you will get more than calories on average. Is there any compelling evidence to support this clairm data provided in problem 1 to conduct a test, with a 0.05. Assume the population is normally distributed. (a) (5 points) Please write appropriate hypotheses. (b) (5 points) Compute the test statistic. (c) (5...
(24 total points) In a study conducted by the Pew Research Center for the 2016 election, 1068 out of 3956 people (27%) with at least a college degree identified themselves as Republican while 1235 out of 4117 people (30%) without a college degree (ie. some college or less) identified themselves as Republican. Is there a difference in whether people identify themselves as Republican between college graduates and non-college graduates? (a) (2 points) Identify the explanatory and response variables (b) (2...
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plz answer from a to g
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