
Question 1 
What is the experimental probability? 
A.  Experimental probability of an event is the number of times the event occurs.  B.  Experimental probability of an event is equal to the total number of trials. 
C.  Experimental probability of an event is the ratio of the number of times the event occurs to the total number of trials.  D.  Experimental probability of an event is the ratio of the total number of trials to the number of times the event occurs. 
 
  

Question 2 
There are 45 people in a restaurant. 20 of them are female and 25 of them are male. Calculate the experimental probability that the next person to walk into the restaurant is male? 
A.  1/25  B.  1/9 
C.  4/9  D.  5/9 
 
  

Question 3 
In a 200 question multiple choice test there were four choices for each question; A, B, C and D. Sam checked 50 questions in that test. He found that 15 questions had correct answer as A, 10 questions had correct answer as B, 12 questions had correct answer as C and 13 questions had correct answer as D. What is the experimental probability that a randomly selected question will have correct answer as C? 
A.  0.5  B.  0.24 
C.  0.2  D.  0.12 
 
  


Question 4 
Norah asked a group of people what do they do in their free time. 20 people said Shopping, 34 said Watching TV, 12 said Reading Magazines, 24 said Surfing Internet and 10 said Other Stuff. What is the experimental probability that a person will be interested in Watching TV? 
A.  1/125  B.  125/34 
C.  34/125  D.  10/34 
 
  

Question 5 
In a programming assignment, instructor found out that 13 people take two to three hours, 17 people take three to four hours and 10 people take more then four hours to complete the assignment. What is the experimental probability that the assignment can be done in less than four hours? 
A.  0.75  B.  0.25 
C.  0.425  D.  0.325 
 
  

Question 6 
In a programming assignment, instructor found out that 13 people take two to three hours, 17 people take three to four hours and 10 people take more then four hours to complete the assignment. What is the experimental probability that the assignment can be done in less than three hours? 
A.  0.75  B.  0.25 
C.  0.425  D.  0.325 
 
  


Question 7 
An ice cream shop recorded the number of customers purchasing ice creams of each of the four flavors available.
Flavor  Number of customers  Vanilla  12  Chocolate  18  Strawberry  9  Peach  11 
What is the experimental probability that the next customer will purchase a peach ice cream?

A.  1/50  B.  11/50 
C.  1/11  D.  1/5 
 
  

Question 8 
An icecream shop recorded the number of customers purchasing ice creams of each of the four flavors available.
Flavor  Number of customers  Vanilla  12  Chocolate  18  Strawberry  9  Peach  11 
What is the experimental probability that the next customer will not purchase a chocolate icecream? 
A.  32/50  B.  18/50 
C.  1/18  D.  1/32 
 
  


Question 9 
A sack of marble has red, blue and yellow marbles randomly distributed in it. Jim pulled 30 marbles from the sack and recorded the result as shown in the table below.
Color  Number of marbles  Red  13  Blue  9  Yellow  8 
What is the probability that next marbled pulled will be blue? 
A.  9/20  B.  1/9 
C.  3/10  D.  3/30 
 
  

Question 10 
Molly asked number of people about their age and recorded in a table.
Age Group  Number of people  020  15  2140  24  4160  18  60 and over  21 
What is the experimental probability that the next person will be 40 year old or less? 
A.  24/78  B.  39/78 
C.  12/39  D.  9/39 
 
  
