Which of the following is NOT true when testing a claim about a standard deviation or variance? A. The table for finding P-values does not usually give exact P-values as it only includes select values of alpha and selected numbers of degrees of freedom.
In a chi-square test, the expected frequencies _____. a. Are expected to occur under the terms of the research hypothesis b. Are expected to occur under the terms of the null hypothesis c. Refer to those frequencies actually observed d.
QUESTION 1. Which of the following is NOT true when using one-way analysis of variance for testing equality of three or more population means?
If the F test statistic is large, then the P-value will be large.
A. Small F test statistics indicate that the decision is to reject the null hypothesis of equal means.
A. The samples are simple random samples of categorical data.
There is an ??? between two factors if the effect of one of the factors changes for different categories of the other factor.
C. The exact shape of the F distribution depends on the two different degrees of freedom.
A. The F test statistic is very sensitive to sample means , even though it is obtained through two different estimates of the common population variance.
If the sample results (or more extreme results) cannot easily occur when the null hypothesis is true, we explain the discrepancy between the assumption and the sample results by concluding that the assumption is true, so we do not reject the assumption.
If the P-value is less than 0.05, the decision is to reject the null hypothesis. Otherwise, we fail to reject the null hypothesis
The variance of the differences between two independent random variables is the sum of their individual variances.
The inequality symbol in the alternative hypothesis points away from the critical region.
The P-value method and the classical method are not equivalent to the confidence interval method in that they may yield different results.
The table for finding P-values does not usually give exact P-values as it only includes select values of alpha and selected numbers of degrees of freedom.
A conclusion based on a confidence interval estimate will be the same as a conclusion based on a hypothesis test.
If the F test statistic is large, then the P-value will be large.
A. Small F test statistics indicate that the decision is to reject the null hypothesis of equal means.
A. The samples are simple random samples of categorical data.
There is an ??? between two factors if the effect of one of the factors changes for different categories of the other factor.
C. The exact shape of the F distribution depends on the two different degrees of freedom.
A. The F test statistic is very sensitive to sample means , even though it is obtained through two different estimates of the common population variance.