If the alternative hypothesis was H1: µA # µB (that is, you are doing a two-tailed test), what was teritical ?
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- See the attached image for the introduction. In terms of variables xi and parameters βi, write the null and alternative hypotheses for testing whether, after including Price/Square Feet(x2) in the model already, the further incorporation of the other 2 explanatory variables (x1, x3) adds any useful information for explaining pricey. Also, give the value of the F statistic and its degrees of freedom (df).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 a population with µ = 40 and σ = 8, what is the X value corresponding to z = 1.50?
- A sample of n = 16 scores produces a t statistic of t = 2.00. If the sample is used to measure effect size with r2, what value will be obtained for r2?The test statistic is t = 1.34, the critical value is t = 2.011. The decision would be to: Reject the null hypothesis or Support the null hypothesis or Retain the null hypothesis or Support the alternative hypothesis.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.
- Assuming all other factors are held constant, if the df value for a two-tailed t-test with a = .05 were increased from df =6 to df = 20, what would happen to the critical values for t?the null and alternative hypothesis are given. h0: p= 0.84 h1: pgreater than .84 determine left, right or two tailed and the parameter that is being testedA new insecticide is advertised to kill more than 95% roaches upon contact. In a laboratory test, the insecticide was applied to 400 roaches and 384 died immediately after contact. Is this sufficient evidence to support the advertised claim? Use α=0.05. (c) p-value for the problem above i
- Given the context in the answers, thep-value is 0.0022. At a 1% level of significance, the appropriate conclusion is a)There is sufficient evidence to conclude that the proportion of people in the United States in 2011 who contracted neuroinvasive West Nile disease is less than the proportion of people in the United States in 2010 who contracted neuroinvasive West Niledisease. b)There is insufficient evidence to conclude that the proportion of people in the United States in 2011 who contracted neuroinvasive West Nile disease is more than the proportion of people in the United States in 2010 who contracted neuroinvasive West Nile disease. c)There is insufficient evidence to conclude that the proportion of people in the United States in 2011 who contracted neuroinvasive West Nile disease is less than the proportion of people in the United States in 2010 who contractedneuroinvasive West Nile disease. d) There is sufficient evidence to conclude that the proportion of people in the United…What percentage of scores is between a z of ‐2 and a z of +2? Why is this important?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.