For independent events A and B with P(A)=0.3, P(B)=0.4, the probability that at least one of them occurs is: MCQ with Answer and Explanation

Question

Share Report Error

For independent events A and B with P(A)=0.3, P(B)=0.4, the probability that at least one of them occurs is:

A. 0.58

B. 0.12

C. 0.70

D. 0.82

Answer: Option A

Solution (By JKSSB Mock Tests)

P(A∪B)=0.3+0.4-0.3×0.4=0.7-0.12=0.58.

This question belongs to: Accountancy and Statistics Statistics

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Statistics Questions

Question #1

Share Report

A box contains 5 defective and 15 non-defective items. Two items are drawn. The probability that both are non-defective is:

A. 15/20 × 14/19 = 21/38

B. (15/20)²

C. 21/38

D. 1 - (5/20)²

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option A

Explanation:
P(both non-defective) = (15/20)×(14/19) = 210/380 = 21/38.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Share Report

Life expectancy at birth is computed using:

A. Life table

B. Census only

C. Sample survey

D. Birth registration

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option A

Explanation:
Life table synthesizes age-specific mortality rates to compute life expectancy.

This question belongs to: Accountancy and Statistics Statistics

Question #3

Share Report

If the geometric mean of a set of numbers is zero, which statement must be true?

A. All numbers are negative.

B. At least one number is zero.

C. All numbers are zero.

D. All numbers are equal.

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option B

Explanation:
Geometric mean becomes zero if any observation is zero.

This question belongs to: Accountancy and Statistics Statistics

Explore All Statistics MCQs