3. Discuss the basic procedure in making inferences on two samples and give a situation where you can apply it.
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- You intend to conduct a test of homogeneity for a contingency table with 5 categories in the column variable and 6 categories in the row variable. You collect data from 690 subjects. What are the degrees of freedom for the x distribution for this test? d.f. =Health researchers wish to compare the efficacy of the Moderna vs. Pfizer Vaccine. Here are 4 possible reasons that it would not make sense to run a matched pair experiment for such a study. Pick the TWO that are correct. 1: You would not be able to find twins willing to be part of such an experiment 2: You could not get two large independent samples for the purposes of comparison. 3: It would be hard to match two people for this test, since researchers do not yet understand what individual factors contribute to the variation of immunity to this disease. 4: It would make no sense to test both vaccines on one person and compare the outcomes. The two that are correct are: Oa. 1 and 4 The two that are correct are: 1 and 3 Ob. The two that are correct are: O c. 1 and 4 The two that are correct are: O d. 2 and 3 The two that are correct are: 3 and 4 O e.Ann and Sam are both testing the hypothesis that 40% of plain M&M are orange. Ann draws a sample of 150 plain M&M and finds that 45% of her sample is orange. Ann's test statistic is?
- 4. Researchers believe that men are more physically aggressive than women. To test this, researchers ask 20 participants (10 male, 10 female) to rate how aggressive they are on a scale from 1 to 10. Their scores are listed below. Conduct all six steps of hypothesis testing (use p=.05). Be sure to label all six steps. Also, include a concluding statement (which should include the effect size). Males Females 9 1 8 3 9 5 7 2 8 4 6 3 5 2 9 5 7 4 8 3 M 7.6 3.2 s 1.35 1.32I am to do a project for an inferential statistics class and I would like some basic guidance. I am to propose a research question. My proposed research question is "Does drinking stimulants such as coffee improve a student's grades?" My question is what type of hypothesis test should I use. My options are (Test of Association hypothesis test), (Goodness of Fit hypothesis test), (Two sample hypothesis test for means), and a(Two sample hypothesis test for proportions). My guess is it would be a (Two sample hypothesis test for proportions)? The only other potential category I could see it falling in is (Test of Association hypothesis test).2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
- What’s the proportionYou intend to conduct a independence for a contingency table with 6 categories in the column variable and 3 categories in the row variable. You collect data from 102 subjects. What are the degrees of freedom for the x² distribution for this test? d.f. =[2] Instruction: Draw a conclusion by analyzing the given sets of data using the z test. Use the 7 steps below in answering a word problem in inferential statistics. (Type the answers with solution, NOT HANDWRITTEN + Please put a label with "step #" on every solution). Note (1): pls refer for the format in the photo below and few example on how to answer each steps. Note (2): pls refer for the problem on the next photo
- 10. An inspector needs to learn if customers are getting fewer ounces of a soft drink than the 28 ounces stated on the label. After she collects data from a sample of bottles, she is going to conduct a test of a hypothesis. She should use a. a two tailed test. b. a one tailed test with an alternative to the right. c. a one tailed test with an alternative to the left. d. either a one or a two tailed test because they are equivalent. e. none of the abovep2. answer only pls 10. what is the null hypothesis 11. what is the alternative hypothesis 12. what is the claim, the null hypothesis or the alternative hypothesis 13. what type of test to use 14. what is the level of significance? 15. what is the degrees of freedom30. A researcher had originally planned to collect a sample of size 200, and conduct a hypothesis test with a 5% significance level. Now, she has decided instead to collect a sample of size 300, and conduct a hypothesis test with a 1% significance level. How will this change affect the A probabilities of type I and type 2 error? The probability of type 1 error will decrease, and the probability of type 2 error will increase. The probability of both type 1 and type 2 error will decrease. The probability of type 1 error will decrease, but it's impossible to determine whether the probability of type 2 error will increase or decrease. The probability of type 1 error will increase, and the probability of type 2 error will decrease. The probability of type 2 error will decrease, but it's impossible to determine whether the probability of type 1 error will increase or decrease.