In a study in which the null hypothesis has been rejected, we should be aware of the possibility of? Only one answer A) confounding variable B) Type II errors C) change due to new observations D) insufficient power to detect differences

3)Given that the alternative hypothesis is true, a type II error could occur if: a.We fail to reject the null b.We incorrectly calculate the test statistic c.We reject the null d.We incorrectly calculate the p value

Find the z-score location of a vertical line that separates a normal distribution as described in each of the following.  5% in the tail on the left 30% in the tail on the right 65% in the body on the left 80% in the body on the right A normal distribution has a mean of μ = 70 and a standard deviation of σ = 8. For each of the following scores, indicate whether the tail is to the right or left of the score and find the proportion of the distribution located in the tail. X = 72 X = 76 X = 66 X = 60   For a normal distribution with a mean of μ = 60 and a standard deviation of σ = 10, find the proportion of the population corresponding to each of the following. Scores greater than 65. Scores less than 68. Scores between 50 and 70.   IQ test scores are standardized to produce a normal distribution with a mean of μ = 100 and a standard deviation of σ =15. Find the proportion of the population in each of the following IQ categories. Genius or near genius: IQ over 140 Very superior…

In a One-Sample Chi-Square Test (Goodness of Fit Test) you have both an independent and a dependent variable. True False