Question

At the close of business at Gloria's cafe, she looks at the data of how much money

was spent in each customer transaction.
$5-$9.99 $10-$14.99 $15-$19.99 $20 or more
Money spent $0-$4.99
Number of
customers
3
14
19
18
7
If sales tomorrow are expected to be roughly the same as today, what is the
probability that a Jandomly selected customer will spend $10 or more? Express your
answer as a percent to the nearest whole number. (You don't need to type the percent
symbol.)

Answer 1

To find the probability that a randomly selected customer will spend $10 or more at Gloria's cafe, you can calculate the cumulative probability for the range $10 or more. The probability is 12 percent.

Step-by-step explanation:

To find the probability that a randomly selected customer will spend $10 or more, we need to calculate the cumulative probability for the range of $10 or more.

1. First, find the cumulative probability for the range $0-$9.99 by summing the probabilities for each individual range: 3/61 + 14/61 + 19/61 + 18/61 = 54/61.
2. Then, subtract the cumulative probability for the range $0-$9.99 from 1 to get the probability for the range $10 or more: 1 - 54/61 = 7/61.

Finally, convert the probability to a percent by multiplying by 100 and rounding to the nearest whole number. Therefore, the probability that a randomly selected customer will spend $10 or more is 12 percent.