Probability Test

Result

Probability Test - 71

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Weekly Quiz Competition

Question 1
4 / -1

The records of a hospital show that 10% of the cases of a certain disease are fatal. If 6 patients are suffering from the disease, then the probability that only three will die is

A

B

C

D

Solution
Question 2
4 / -1

Assuming that for a husband wife couple the chances of their child being a body or a girl a the same, the probability of their two children being a boy and a girl is

A

B
1

C

D

Solution
Question 3
4 / -1

The probability that a student is not a swimmer is 1/5. What is the probability that out of 5 students, 4 are swimmers

A

B

C

D
None of these

Solution
Question 4
4 / -1

An experiment succeeds twice as often as it fails. Find the probability that in 4 trails there will be at least three success

A

B

C

D

Solution
Question 5
4 / -1

The mean and variance of a binomial distribution are 6 and 4. The parameter n is

A
18

B
12

C
10

D
9

Solution
Question 6
4 / -1

Five coins whose faces are marked 2, 3 are tossed. The chance of obtaining a total of 12 is

A

B

C

D

Solution
Question 7
4 / -1

A bag contains 2 white and 4 black balls. A ball is drawn 5 times with replacement. The probability that at least 4 of the balls drawn are white is

A

B

C

D

Solution
Question 8
4 / -1

A coin is tossed 2n times. The chance that the number of times one gets head is not equal to the number of times one gets tail is

A

B

C

D
None of these

Solution
Question 9
4 / -1

A

B

C

D

Solution
Question 10
4 / -1

A die is tossed 5 times. Getting an odd number is considered a success. Then the variance of distribution of success is

A

B

C

D

Solution