Question

How would i show work on this? A DATA set shows the number of minutes each of 153,477 students takes to complete a

reading test. The median completion time is 110 minutes. The interquartile range is 34. Which
statement about the completion times is most likely to be true?
Of these students, 25% complete the test in 110 minutes or less.
B. Of these students, 50% complete the test in 110 minutes or less.
C. Of these students, 75% complete the test in 127 minutes or less.
D. Of these students, 75% complete the test in 144 minutes or less.

Answer 1

C

Explanation:

half of IQR is 17

110 + 17 = 127 (this represents the 3rd quartile)

110 - 17 = 93 (this represents the 1st quartile)

The 3rd quartile represents 75% of the data so 75% of the students complete the test in 127 minutes or less