A manager has been given the table shown below and is asked to generate random numbers.Which of the following statements is TRUE?
A)There are no customers in the store 49 percent of the time.
B)The probability of having one customer in the store is 0.30.
C)The relative frequency of having two customers in the store is 0.80.
D)If we randomly choose the numbers 0 through 99 enough times,about 99 percent of the time we will have two customers in the store.

Question

A manager has been given the table shown below and is asked to generate random numbers.Which of the following statements is TRUE? 
A)There are no customers in the store 49 percent of the time. 
B)The probability of having one customer in the store is 0.30. 
C)The relative frequency of having two customers in the store is 0.80. 
D)If we randomly choose the numbers 0 through 99 enough times,about 99 percent of the time we will have two customers in the store.

Quizplus · Accepted Answer

The table shows the probabilities (not relative frequencies) of having different numbers of customers in the store. The sum of all probabilities is 1, which means that customers are in the store 100 percent of the time. Therefore, option A is false. The probability of having one customer is 0.30, which means that if we randomly choose 10 numbers from 0 to 99, we can expect about 3 of them to correspond to one customer. Therefore, option B is true. The relative frequency of having two customers is simply the probability of having two customers, which is 0.20, not 0.80. Therefore, option C is false. Finally, option D is impossible to determine from the table alone, as it depends on the specific rules used to generate the random numbers.

A Manager Has Been Given the Table Shown Below and Is