Q18: The standard deviation for the sample numbers 8, 9, and 10 is A 1.0 B. .67 C. 0.0 D. -3.0 Q19: A university administrator randomly selected 10 freshmen and 10 seniors and asked them how satisfied they are with life at Ohio University on a 1 (not at all satisfied) to 9 (very satisfied) scale. The administrator's date is below: Mean Variance Freshmen 10 0O W Seniors 1 These results seem to indicate that: A. freshmen agree more with each other about their life satisfaction than do seniors seniors agree more with each other about their life satisfaction than do freshmen C. all freshman tend to be satisfied with life D. freshmen and seniors experience equal life satisfaction E. none of the above are accurate Q20: A sample of data has a standard deviation of 10. If you were to divide all the scores in data set by a factor of two (2), what would the new standard deviation be? A. 10 B. 7.5 D. 2.5