Median Household Income for the 50 States of the United States of America, 2008 (rounded to the nearest $1000, in thousands) KEY: 5| 4 means $53,500 to $54,499 States WEST of States EAST of Mississippi River Mississippi River n = 24 n = 26 x-bar = 51.9 9 + 8 8 x-bar = 52.3 std dev = 8.7 4 4 4 3 4 234 std dev = 8.9 9876 6 + 57 78 8 89 310000 5 1 122 87 7 7 6 + 6 668 6 1 14 8 7 59 7 0 Directions: Use the back-to-back expanded stemplot on the previous page to answer the questions 9 thru 25. 9) The minimum median income illustrated occurs in the State of Mississippi (on the East side). The "leaf" that corresponds to it represents an actual median income of something between P and Q. What is the value of Q (also known as the highest possible median income for the State of Mississippi)? A. $38,000 B. $38,499 C. $38,500 D. $38,999 E. $39,000 10) The maximum median income illustrated occurs in the State of California (on the West side). What is the smallest median income its "leaf" could possibly represent? A. $70,000 B. $70,499 C. $70,500 D. $70,999 E. $71,000 11) How many standard deviations above center is California's median income? A. less than 2. B. 2.19 C. 2.20 D. 2.21 E. more than 2.5 12) On the East side, how many data values are within 1 standard deviation of the mean? A. 16 B. 17 C. 18 D. 19 E. 20 h the stemplot