56/ If a regression line goes down one unit for every two it moves across going from left to right, b = A) -0.5 B) +2.00 C) -2.00 D) +50 E)-(1/2) F) -5 G)-1/2 H) -50 57/A psychologist who rejects the null hypothesis because the probability of obtaining the results if the null hypothesis is true is 4% would express this finding when writing up the results in a research article as: A)prob. <5% B) Rejection rate .04 C)Type |<.05 D)p<.05 59/An experimental psychologist interested in whether the color of an animal's surroundings affects learning rate tests 9 rats in a box with colorful wallpaper. The average rat of this strain can learn to run this type of maze in a box without any special coloring in 23 trials, with a variance of 16 and the distribution is normal. The mean number of trials to learn the maze for the rats tested with the colorful wallpaper is 25. The shape of the distribution of means: A)will be rectangular B)will be normal C)will be more spread out then a normal curve D)will be flatter than a normal curve