Does the background color appear to have an effect on the variation of word recall scores A. No, the variation of word recall scores appear to be different when the color is changed B. Yes the variation of word recall scores appear to be different when the color is changed C. No, the variation of word recall scores appear to be the same when the color is changed D. Yes, the variation of word recall scores appears to be the same when the color is changed

Words were displayed on a computer screen with background colors of red and blue. Results from scores on a test of word recall are given below. Use a 0.05 significance level to test the c the samples are from populations with the same standard deviation. Assume that both samples are independent simple random samples from populations having normal distributions. Does background color appear to have an effect on the variation of word recall scores? X Red Background 34 15.36 5.95 Blue Background 37 12.29 5.45 What are the null and alternative hypotheses? O A. Ho: 02 = 03 OB. Ho: 02 # 03 H1: 07