For #6 - #10: The results of a hypothesis test are reported as follows: t(15) = 2.70, p < .05. Based on this report: 7. What was alpha set at by the experimenters at the beginning of the experiment?
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- Shannon conducts a study and tells you that when she calculated Cohen's d , it was 0.00. What conclusion would you reach about the effects of her independent variable?For each of the following settings, define the parameter of interest and write the appropriate null and alternative hypotheses for the test that is described. Scenario 1: In an avocado, the average seed diameter is 1 inch. However, you are an avocado expert and you believe that the average seed diameter is increasing recently.For a population with u=50 and o=10,what is the x value corresponding to z=0.4?
- For the following conjecture, state the null and alternative hypotheses. The average resting pulse rate of male marathon runners has decreased from 70 beats per minute. The null hypothesis is : H0 ____ The alternative hypothesis is : H1 ____What happens to N(t)=100x e^(5t) as t → infinity? Based on your answer would you consider this a realistic model of a population?What is the physical significance of y[n]=T{x[n]}
- For the situation described below, state the null and alternative hypotheses to be tested. (Enter != for ≠ as needed.) A new variety of pearl millet is expected to provide an increased yield over the variety presently in use, which has a mean yield of about 55 bushels per acre.For b there are two cases and for c I have to plug the initial data into the odeYou conduct a hypothesis test and find that your data are statistically significant at alpha = 0.03. What may you conclude? A. The data would also be significant at alpha = 0.02. B. The data would also be significant at alpha = 0.05. C. Both A and B are true. D. Neither A nor B is true.
- For each of the following settings, define the parameter of interest and write the appropriate null and alternative hypotheses for the test that is described. Scenario 2: According to the Galactic Empire’s study, 0.5% of the people in the galaxy are Jedi. You are interested in determining if the proportion of the Jedi on the planet Tatooine is different than the galaxy’s proportion.(a) For t=1.937, should you reject or fail to reject the null hypothesis? (b) For t=0, should you reject or fail to reject the null hypothesis? (c) For t=1.847, should you reject or fail to reject the null hypothesis? (d) For t=−1.948, should you reject or fail to reject the null hypothesis?For Questions 1 and 2, you will read an operational hypothesis. Identify the independent variable (IV), dependent variable (DV), and unit of analysis (UA). For each variable (IV and DV), indicate the appropriate level of measurement. There is a relationship between political affiliation (on a scale of 1 to 10, where 1 = very liberal and 10 = very conservative) and U.S. geographic regions, such that people living in the Northeast are more likely to consider themselves liberal than people living in the South. IV: DV: UA: Level of Measurement (IV): Level of Measurement (DV):