11 The following table shows the cumulative frequencies for values of x. <0 <10 <15 <25 < 30 < 40 of 30 90 102 120 12 Without drawing a cumulative frequency graph, find: a the interquartile range b the 85th percentile.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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11 The following table shows the cumulative frequencies for values of x.
<0
<10
<15
< 25
< 30
< 40
120
of
90
0.
12
30
102
Without drawing a cumulative frequency graph, find:
a
the interquartile range
b the 85th percentile.
Transcribed Image Text:11 The following table shows the cumulative frequencies for values of x. <0 <10 <15 < 25 < 30 < 40 120 of 90 0. 12 30 102 Without drawing a cumulative frequency graph, find: a the interquartile range b the 85th percentile.
11 а 10
a Points plotted at (0, 0), (4, 2), (11,
b 30
12
Transcribed Image Text:11 а 10 a Points plotted at (0, 0), (4, 2), (11, b 30 12
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