Probability and Statistics

The probability of a leap year selected at random contain 53 Sunday is

• 53/366

• 1/7

• 2/7

• 53/365

Tags

CCSS.HSS.CP.B.9

A bag contains 3 red and 2 blue marbles. A marble is drawn at random. The probability of drawing a black ball is :

• 3/5

• 2/5

• 0/5

• 1/5

Tags

CCSS.7.SP.C.7B

The probability that it will rain tomorrow is 0.85. What is the probability that it will not rain tomorrow

• 0.25

• 0.145

• 3/20

• none of these

Tags

CCSS.HSS.CP.B.7

A card is selected from a deck of 52 cards. The probability of its being a red face card is:

• 3/26

• 3/13

• 2/13

• 1/2

The probability that a non-leap year selected at random will contain 53 Sundays is:

• 1/7

• 2/7

• 3/7

• 5/7

Tags

CCSS.HSS.CP.B.9

The probability of getting a bad egg in a lot of 400 is 0.035. The number of bad eggs in the lot is:

• 7

• 14

• 21

• 28

Tags

CCSS.7.SP.C.6

Someone is asked to take a number from 1 to 100. The probability that it is a prime is:

• 1/5

• 6/25

• 1/4

• 13/50

Tags

CCSS.7.SP.C.7B

Someone is asked to take a number from 1 to 100. The probability that it is a prime is:

• 1024

• 512

• 100

• 10

Tags

CCSS.7.SP.C.7B

One card is drawn from a well shuffled deck of 52 cards. The probability of getting a king of red colour is

• 1/26

• 1/13

• 1/4

• 1/2

Tags

CCSS.7.SP.C.7B

One card is drawn from a well-shuffled deck of 52 cards. The probability that the card will not be an ace is

• 1/13

• 4/13

• 12/13

• 3/13