Took a practice exam today and had this question. Seemed pretty simple I didn't agree with the solution..
Q:
The findings of a speed survey is summarized below
Speed Interval (mph) Frequency
20 to 24 2
25 to 29 11
30 to 34 18
35 to 39 29
40 to 44 24
45 to 49 13
50 to 54 3
The 85 percentile speed, in mile per hour, is most nearly:
A) 37
B) 40
C) 43
D) 45
Solution says its C but I answered D.
Q:
The findings of a speed survey is summarized below
Speed Interval (mph) Frequency
20 to 24 2
25 to 29 11
30 to 34 18
35 to 39 29
40 to 44 24
45 to 49 13
50 to 54 3
The 85 percentile speed, in mile per hour, is most nearly:
A) 37
B) 40
C) 43
D) 45
Solution says its C but I answered D.