# Complaints

The table is given:
days complaints
0-4 2
5-9 4
10-14 8
15-19 6
20-24 4
25-29 3
30-34 3

1.1 What percentage of complaints were resolved within two weeks?
1.2 calculate the mean number of days to resolve these complaints.
1.3 calculate the modal number of days to resolve these complaints.
1.4 determine the standard deviation.

a =  46.6667 %
b =  16.5
c =  12
d =  8.545

### Step-by-step explanation:

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Showing 1 comment:
Math Teacher
We checked the solution with our statistical calculator:

https://www.hackmath.net/en/calculator/frequency-table?input=0-4+5-9+10-14+15-19+20-24+25-29+30-34%0D%0Af%3A+2+4+8+6+4+3+3

data we enter as grouped frequency table:
0-4 5-9 10-14 15-19 20-24 25-29 30-34
f: 2 4 8 6 4 3 3

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