..ooo T-Mobile 11:42 AM 21%) Done 11 of 11 lf you get a 2 value of 5.6 with a go
ID: 3352161 • Letter: #
Question
..ooo T-Mobile 11:42 AM 21%) Done 11 of 11 lf you get a 2 value of 5.6 with a goodness-of-fit test for a die (with , we fail to reject the null hypothesis that the die is fair. The degrees of freedom for both t models and 2 models grow with le size. ) The F-test is always a one-tailed test. ) For a paired t-test, the differences must be independent. ) The F-test tests the null hypothesis that all the group means are equal the one-sided alternative that they are not all equal. t) If residual analysis after a chi-square test of homogeneity produces a value (standardized residual) for a cell, this means that the expected was greater than the observed count. t) Paired t-tests are always two-sided. t) When we use the formula Var(X +Y) Var(X) + Var(Y) to compute riance of X - Y, we don't assume X and Y are independent. t) A large margin of error means that we have a confidence interval that es less information about the parameter. nt) Increasing the sample size decreases the power of the test. nt) An observational study in which subjects are selected and previous ions or behaviours are determined is called a retrospective study nt) When neither the subject nor the persons in charge of evaluation of re- e know what group a subject belongs to, this is a double-blind experiment.Explanation / Answer
Solution:-
a) True.
n = 6
D.F = 5
X2 = 5.6
P(X2> 5.6) = 0.347
Interpret results. Since the P-value (0.347) is greater than the significance level (0.05), we have to accept the null hypothesis.
b) False
Degree of freedom only grows for t model not for X2 model.
c) False.
F-test for standard deviation or variance is two tailed.
d) True.
e) True
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