Which of the following is the sample space when 2 coins are tossed?
(H, T, H, T)
(H, T)
(HH, HT, TH, TT)
None of the above
In a shipment of 100 televisions, 6 are defective. If a person buys two televisions, what is the probability that both are defective?
3/100
9/2500
1/330
None of the above.
A glass jar contains 5 red, 3 blue and 2 green jelly beans. If a jelly bean is chosen at random from the jar, then which of the following is an impossible event?
Choosing a red jelly bean
Choosing a blue jelly bean
Choosing a yellow jelly bean
None of the above
A spinner has 7 equal sectors numbered 1 to 7. If you spin the spinner, then which of the following is a certain event?
Landing on a number less than 7
Landing on a number less than 8
Landing on a number greater than 1
None of the above
What is the probability of choosing 14 hearts from a standard deck of 52 playing cards?
14/52
1
0
None of the above
If a number is chosen at random from the following list, then what is the probability that it is prime? 2, 3, 5, 7, 11, 13, 17, 19
1
0
1/8
None of the above
If a single die is rolled, then which of the following events is neither certain nor impossible?
Rolling a number less than 7
Rolling an even number
Rolling a zero
None of the above
At Ketan Middle School, 3 out of 5 students make honor roll. What is the probability that a student does not make honor roll?
65%
40%
60%
None of the above
A large basket of fruit contains 3 oranges, 2 apples, and 5 bananas. If a piece of fruit is chosen at random, what is the probability of getting an orange or a banana?
4/5
½
7/10
None of the above
A pair of dice is rolled. What is the probability of getting a sum of 2?
1/6
1/3
1/36
None of the above.
In a class of 30 students, there are 17 girls and 13 boys. A total of 5 students made an A grade on their report card, three of which were girls. If a student is chosen at random, what is the probability of getting a girl or an A student?
19/30
11/15
17/180
None of the above
In the United States, 43% of people wear a seat belt while driving. If two people are chosen at random, what is the probability that both of them wear a seat belt?
86%
18%
57%
None of the above
Three cards are chosen at random from a deck. What is the probability of getting an ace, a king and a queen in order?
8.16,575
½, 197
6/35,152
None of the above
A city survey found that 47% of teenagers have a part time job. Of those teenagers, 78% also plan to attend college. If a teenager is chosen at random, what is the probability that he/she has a part time job and plans to attend college?
60%
63%
37%
None of the above
In a school, 14% of students take drama and computers, and 67% take computer class. What is the probability that a student taking computers also takes drama?
81%
21%
53%
None of the above
In New York State, 48% of all teenagers own a skate board, and 39% of all teenagers have a skate board and roller blades. What is the probability that a teenager has roller blades given that he/she has a skate board?
87%
81%
123%
None of the above
At a middle school, 18% of all students play football and basketball, and 32% of all students play football. What is the probability that a student who plays football also plays basketball?
56%
178%
50%
None of the above
In the United States, 56% of all children get an allowance, and 41% of all children get an allowance and do household chores. What is the probability that a child does household chores given that he/she gets an allowance?
137%
97%
73%
None of the above
In Europe, 88% of all households have a television. 51% of all households have a television and a VCR. What is the probability that a household with a television also has a VCR?
173%
58%
42%
None of the above
In New England, 84% of the houses have a garage. 65% of the houses have a back yard and a garage. What is the probability that a house has a backyard given that it has a garage?
77%
109%
19%
None of the above
Which of the following is an experiment?
Tossing a coin
Rolling a single die
Choosing a marble from a jar
All of the above
Which of the following is an outcome?
Rolling a pair of dice
Landing on red
Choosing 2 marbles from a jar
None of the above
Which of the following experiments does NOT have equally likely outcomes?
Choose a number at random from 1 to 7
Toss a coin
Choose a letter at random from the word SCHOOL
None of the above
What is the probability of choosing a vowel from the alphabets?
21/26
5/26
1/21
None of the above
A number from 1 to 11 is chosen at random. What is the probability of choosing an odd number?
1/11
5/11
6/11
None of the above
Spin a spinner numbered 1 to 7, and toss a coin. What is the probability of getting an odd number on the spinner and a tail on the coin?
3/14
2/7
5/14
None of the above
A jar contains 6 red balls, 3 green balls, 5 white balls, and 7 yellow balls. Two balls are chosen from the jar, with replacement. What is the probability that both balls are green?
6/441
2/49
1/49
None of the above
In Exercise 2, what is the probability of getting a red and a yellow ball?
2/21
3/21
13/63
All of the above
Four cards are chosen from a standard deck of 52 playing cards with replacement. What is the probability of getting 4 hearts?
13/52
1/16
1/256
None of the above
A nationwide survey showed that 65% of all children in the United States dislike eating vegetables. If 4 children are chosen at random, what is the probability that all 4 dislike eating vegetables?
18%
260%
2%
None of the above
A student is chosen at random from a class of 16 girls and 14 boys. What is the probability that the student chosen is not a girl?
8/15
7/15
1
None of the above
A glass jar contains 5 red, 3 blue and2 green jelly beans. If a jelly bean is chosen at random from the jar, what is the probability that it is not blue?
½
3/10
7/10
None of the above
A number from 1 to 5 is chosen at random. What is the probability that the number chosen is not odd?
2/5
3/5
0
None of the above
If a number is chosen at random from the following list, what is the probability that it is not prime?
2,3,5,7,11,13,17,19
1
1/8
0
None of the above
If a single 6-sided die is rolled, what is the probability of rolling a number that is not 8?
5/6
1
0
None of the above
Suppose flaws (cracks, chips, specks, etc.) occur on the surface of glass with density of 3 per square metre. What is the probability of there being exactly 4 flaws on a sheet of glass of area 0.5 square metre?
0.047
0.168
0.981
0.815
0.647
The number of traffic accidents per week in a small city has a Poisson distribution with mean equal to 1.3. What is the probability of at least two accidents in 2 weeks?
0.2510
0.3732
0.5184
0.7326
0.4816
The number of traffic accidents per week in a small city has Poisson distribution with mean equal to 3. What is the probability of at least one accident in 2 weeks?
0.0174
0.9502
0.9975
0.1991
0.0025
Significant birth defects occur at a rate of about 4 per 1000 births in human populations. After a nuclear accident, there were 10 defects observed in the next 1500 births. Find the probability of observing at least 10 defects in this sample if the rate had not changed after the accident.
008
.003
.041
.084
.042
Refer to the precious question. An approximate 95% interval for the number of defects that would occur in 1500 births (assuming that the rate has not changed) is :
(4,8)
(2,10)
(2,6)
(0,8)
(0,12)
In a certain communications system, there is an average of 1 transmission error per 10 seconds. Let the distribution of transmission errors be Poisson. What is the probability of more than 1 error in a communication one-half minute in duration?
0.950
0.262
0.738
0.199
0.801
Bacteria in hamburger are distributed through out the meat. Suppose that a large batch of hamburger has an average contamination of 0.3 bacteria/gram. Then the probability that a 10 gram sample will contain one or fewer bacteria is:
.2222
.7408
.9603
.1494
.1992