A call centre aims to deal with calls in less than 5 minutes. Calls come in randomly.
The table shows data for the calls made to the centre.
Type of call
Customer complaints
New business
Proportion of all calls
1/4
Completed in less than 5 minutes
1/2
1/8
3/4
Work out the probability that the next call will be a customer complaint completed within under 5
minutes.
Give your answer as a fraction in its simplest form.

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get

add the numbers under frequency to find the total number:

5 + 8 +7 + 4 + 0 +1 = 25

the answer is 25.