Question

a wireless mobile carrier keeps records of complaints received from its customers. complaints for last month are listed in the following table. what percent of the complaints are from the categories insurance doesnt cover lost/theft or long customer service wait times? round your answer to two decimal places, if necessary.

customer complaints
type of complaint | frequency
poor coverage | 118
too expensive | 90
extra data usage charges | 87
long customer service wait times | 92
poor tech support | 106
incorrect billing | 89
insurance doesnt cover lost/theft | 43
frequently drops calls | 156

Explanation:

Step1: Sum target complaint frequencies

Add frequencies of the two categories:
$43 + 92 = 135$

Step2: Calculate total complaints

Sum all frequency values:
$118 + 90 + 87 + 92 + 106 + 99 + 43 + 156 = 791$

Step3: Compute percentage

Divide target sum by total, multiply by 100:
$\frac{135}{791} \times 100 \approx 17.07$

Answer:

17.07%