finding a conditional probability\na phone company surveys a sample of current customers to determine if…

finding a conditional probability\na 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.\nplan a: 27 text, 21 internet\nplan b: 13 text, 10 internet\nanswer the questions to determine a conditional probability.\nhow many customers are on payment plan b?\ncustomers\nhow many of the customers on plan b text?\ncustomers\nwhat 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.

finding a conditional probability\na 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.\nplan a: 27 text, 21 internet\nplan b: 13 text, 10 internet\nanswer the questions to determine a conditional probability.\nhow many customers are on payment plan b?\ncustomers\nhow many of the customers on plan b text?\ncustomers\nwhat 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.

Answer

Explanation:

Step1: Find number of customers on plan B

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

Step2: Identify number of plan B customers who text

Given as 13.

Step3: Calculate conditional probability

Probability = $\frac{\text{Number of plan B customers who text}}{\text{Total number of plan B customers}}=\frac{13}{23}$

Answer:

How many customers are on payment plan B? 23 customers How many of the customers on plan B text? 13 customers What is the probability that a randomly selected customer who is on plan B uses the phone most often to text? $\frac{13}{23}$