Question

a phone company surveys a sample of current customers to determine if they use their phones most often to text or use the internet. they sort the data by payment plans, as shown below. plan a: 27 text, 21 internet plan b: 13 text, 10 internet answer the questions to determine a conditional probability. how many customers are on payment plan b? customers how many of the customers on plan b text? customers what is the probability that a randomly selected customer who is on plan b uses the phone most often to text? give the answer in fraction form.

Explanation:

Step1: Calculate number of customers on plan B

Add text - using and internet - using customers on plan B.
$13 + 10=23$

Step2: Identify number of text - using customers on plan B

Given as 13.

Step3: Calculate conditional probability

The probability that a customer on plan B uses the phone most often to text is the number of text - using customers on plan B divided by the total number of customers on plan B.
$P=\frac{13}{23}$

Answer:

23
13
$\frac{13}{23}$