What claim can you make based on this test? F(2, 38) = 18.75, p < .001, η2 = .48
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- A 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 ithe 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 testedSay you get a z-score of z = 0.35. Find 2 * Pr(Z ≥ |z|)
- What degrees of freedom would younormally expect a t test to have when N1 = 40 and N2 = 55?10.Was your obtained t-value positive or negative? Would it matter either way? With your discussion group, tell my why a positive or negative value is not important when it comes to your obtained valueThe result for a Pearson’s r between students’ anxiety and their achievement was, r(90) = - .75, p = .03. What can the researcher conclude?
- 2. What is the value of c?The test statistic of z equals 1.86 is obtained when testing the claim that pnot equals 0.778. a. Find the P-value.Suppose you are testing H_0 : \mu =H0:μ= 107 against H_a : \mu <Ha:μ< 107. From an SRS of 83 individuals, you compute \bar x =xˉ= 112 and s =s= 4.8. What is the value of the tt-test statistic in this test? Round your answer to three decimal places.
- The result for a Pearson’s r for students’ perceived learning and their sense of community was, r(45) = .72, p = .02. What can the researcher conclude?You are using t-test with 15 degrees of freedom to test H0: u=112 vs Ha: u<112, and the rejection was defined to be all the values less than -1.753. What is the implied value of alpha that this test is being performed at?From this geometruc distrubtion. (0.45)8(0.55). What does the 8 represent? 1. Probability of failure 2. Probability of success 3. The number of failurees 4. Number of sucesses
