Question 14 If the results eta study using a t test for dependent means are reported in a research article as "till?! = (181], p='?1ll (:1 there were 23 degrees of freedom D you can assume a cine-tailed test was used (:1 the result is statistically signicant C: the result is not statistically signicant Question 12 2 pts At test for dependent means would be used to compare: O Drawing ability between two classes of art students O Dance ability of new group of dance students before and after their first month of lessons O The IQ of two children from the same household O The level of sales between department stores in the same mallQuestion 5 A psychologist conducts a t test for dependent means in which it is predicted that there will he increase in condence from before to after a particular selfdevelopment program. The cutoff t needed is 1.833, the standard deviation of the distribution of means of change scores is 5.0, and the mean change score for the sample studied is an increase of 8.4. What is the correct decision? (:1 Reject null hypothesis C) Do not reject null hypothesis ID It cannot be determined without also knowing the population standard deviation 0 It cannot be determined without also knowing the population mean