227- Exam 2 - ch 3, 4, 5. Fall 22 - 100 pts 1.5 hr. 4) The following population parameters were obtained from a graphing calculator. 1-Var Stats X=77 x=1078 x2=83006 Sx=8.30199235 ox=8 In=14 Assuming the population is bell-shaped, between what two values will approximately 68% of the population be? A) 77 to 101 B) 53 to 101 C) 69 to 85 D) 61 to 93 4) 5) Identify the five-number summary of the following data set. 7, 11, 21, 28, 32, 33, 37, 43 5) A) 7, 21, 30, 33, 43 B) 7, 21, 26.5, 33, 43 C) 7, 11, 28, 33, 43 D) 7, 16, 30, 35, 43 6) Which score indicates the highest relative position? I. A score of 2.6 on a test with ~= 5.0 and s = 1.6 II. A score of 650 on a test with ~= 800 and s = 200 III. A score of 48 on a test with ~ = 57 and s = 6 6) A) All three are equal B) III C) I D) II 7) Which plot below has a five-number summary of 5, 6, 7, 9, 12 and an interquartile range of 3? A) 7) 4 5 6 7 8 9 10 11 12 13 14 B) 4 5 6 7 8 9 10 11 12 13 14 NMULTIPLE CHOICE. Choose the one alternative that best completes the statement Give Answers on page 7 1) Find the mean, mode, median, and midrange for the following data set. 12,15,18,18,15,22,15,30,12 1} A} mean = 1?.4, mode = 18, median = 15, midrange = 21.0 B) mean = 21.0, mode = 15, median = 15, midrange = 1?.4 C) mean = 15, mode = 15, median = 1?.4, midrange = 21.0 D) mean = 17.4, mode = 15, median = 15, midrange = 21.0 2) If a distribution is negatively skewed as shown in the gure below, the mean will fall to the right ofthe y median and the mode will fall to the left of the median. 2) 0A ,__ A) False B) True 3) In a unimodal, symmetrical distribution as shown in the gure below, 1' A} the median and the mode are the same, but the mean can be different. B) the mean, the median, and the mode are different. C) the mean, the median, and the mode are the same. D) the mean is the same as the median, but the mode can be different