The table shows the types of customer complaints received by an online business in a month - HSC - SSCE Mathematics Standard - Question 19 - 2022 - Paper 1
Question 19
The table shows the types of customer complaints received by an online business in a month.
Type of complaint Frequency Cumulative frequency Cumulative per... show full transcript
Worked Solution & Example Answer:The table shows the types of customer complaints received by an online business in a month - HSC - SSCE Mathematics Standard - Question 19 - 2022 - Paper 1
Step 1
What are the values of A and B?
96%
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Answer
To find the value of A, we need to calculate the cumulative frequency for the delivery fee. It can be calculated as follows:
A=98+62=160
To find B, which represents the cumulative percentage for delivery time, we use:
B=200192×100%=96%
Step 2
Which types of complaints will the manager address?
99%
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Answer
To address 80% of the complaints, we look at the cumulative percentages. The types of complaints that fulfill this condition are:
Stock shortage (49%)
Delivery fee (A, which contributes to cumulative frequency)
Together, they account for 49% + 31% = 80%, satisfying the manager's target.
