Group 1 Group 2 Group 34.24.51.24.82.4-0.33.42.30.92.5Problem #2: Using the data from Problem #1 above, we want to use the Bonferonni method to test the following hypthesesat the 6% significance level:Erl = I: H(a) Find the value of the test statistic for each of the above three hypotheses (in the above order)(b) Which pairs of means are significantly different (using the Bonferonni method at the 6%% significancelevel)?oadd speaker nos

I solved this Question in excel, same is for your reference:

Answered: Group 1 Group 2 Group 3 4.2 4.5 1.2 4.8…

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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Question 8: After calculating a 98% confidence interval for the difference in populations means of the weights of men and women in a certain country, the result was [4, 14]. What was the difference in sample means for these two groups? Answer:
“It’s a draw, according to two Australian researchers. By age 25, up to 29% of all men and up to 34% of all women have some grey hair, but this difference is so small that it’s considered insignificant.” Assuming the data used in this research comprised 500 men and 500 women selected at random from Australians aged 25: (i) is the observed difference in sample proportions significant at the 5% level? Support your answer with relevant calculations. (ii) calculate a 90% confidence interval for the difference in the proportions of 25-year-olds having some grey hair among Australian males and Australian females.
You want to test the following hypotheses. There are three categories: x, y and z. H0: px = .20, py = .40, and pz = .40 HA: The population proportions are not px = .20, py = .40, and pz = .40 A sample size of 200 resulted in 20 observations in category x, 120 in category y and 60 in category z. Use α = .01 and test to see whether the proportions are as stated in H0. Use the p-value approach. How many degrees of freedom are there?
What is the right statistical test for problem one?
Looking at youth depression scores from a general sample of random children in the US, we want to determine if our sample is significantly different than the national average of scores of children with depression in the US. The national average of scores on a measure of depression is 5 points. We have no reason to assume it will be higher or lower than the US national average. The sample: 11 9 12 3 3 4 13 1. What is the null and alternative hypotheses? Do not specify any directionality. 2. What did you discover (using 95% Cl)? Provide an interpretation.
Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question content area top Part 1 Consider a drug testing company that provides a test for marijuana usage. Among 285 tested subjects, results from 26 subjects were wrong (either a false positive or a false negative). Use a 0.01 significance level to test the claim that less than 10 percent of the test results are wrong. Question content area bottom Part 1 Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. H0: p=0.1 H1: p<0.1 Your answer is correct. B. H0: p=0.1 H1: p≠0.1 C. H0: p<0.1 H1: p=0.1 D. H0: p=0.1 H1: p>0.1 Part 2 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is=

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