Mathematics

Mathematics

Problem

A factory keeps daily records of the number of units produced. The data for one week are grouped below, but two class frequencies are missing.
Units producedFrequency
0–105
10–20p
20–30q
30–4015
40–505
Given that the total number of observations is 68 and the median number of units is 25, find the pair (p, q). a) (12, 31)(12,\,31) b) (15, 21)(15,\,21) c) (15, 28)(15,\,28) d) (25, 18)(25,\,18)

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