# Probability Frequency Calculations

The number of cars arriving at Joe Kelly's oil change and tune-up place during the last 200 hours of operation is observed to be the following:

Number of cars arriving Frequency

3 or less 0

4 10

5 30

6 70

7 50

8 40

9 or more 0

Based on the above frequencies, two digit random numbers are used and the following random number ranges have been developed.

Number of cars arriving Random Number ranges

4 00-04

5 05-19

6 20-54

7 55-79

Using the following sequence of random numbers, simulate 6 hours of car arrivals at Joe Kelly's oil change and tune-up facility. Random numbers: 92, 44, 15,77,21,38.

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#### Solution Preview

First of all, we should complete the random number ranges table, as it doesn't specify what happens for the range 80-99. Given the frequency table, which shows that there are some hours in which 8 cars arrive, it's clear that the ...

#### Solution Summary

The solution answers the probability frequency questions regarding number of cars.