STAT 1010 Midterm: STAT1010 Iowa Exam 2
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100 possible points: the following data describe the length (in mm) of ve grasshoppers: 81, 81, 81, 80, 82. What is the sample standard deviation s of these data? (a) 1. 00 (b) 0. 632 (c) 0. 400 (d) 0. 500 (e) 0. 707: you pay to play a dice game where one 6-sided die is rolled. If you roll a 1 or 2, you get. If you roll a 3 or 4, you get . What is the expected value of the game for you? (a) . 33 (b) sh. 33 (c) sh. 66 (d) . 66 (e) impossible to determine with the given information: consider a quantitative variable we will call x. The probability distribution for x is partially completed below. x. What is p (a and b)? (a) 0. 9 (b) 0. 8 (c) 0. 1 (d) 0. 3 (e) impossible to determine with the given information. Suppose two chips are drawn at random without replacement.
