A sample of 100 customers at the lighthouse cafe resulted

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A sample of 100 customers at the Lighthouse Cafe resulted in the following frequency distribution for a dinner bill.

Amount Number

0-4.99 10

5-9.99 15

10-14.99 40

15-19.99 19

20+ 16

1. Let A be the event that the dinner bill is $10 or over. What is the P(A)? (Round to the nearest hundredth)

2. Let B be the event that the dinner bill is less than $15. What is the P(B)? (Round to the nearest hundredth)

3. Wendy is a waitress at the Lighthouse Cafe and wants to find the probability that a table leaves her a $4 tip or larger. Let's assume that everyone leaves a 20% tip. What is the probability that Wendy receives a $4 tip or larger?

Reference no: EM13636607

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