The sex ratio (females per 1000 males) in India according to Census 2011 is: MCQ with Answer and Explanation

Question
The sex ratio (females per 1000 males) in India according to Census 2011 is:
A. 927
B. 943
C. 940
D. 933
Answer: Option B
Solution (By JKSSB Mock Tests)
India's overall sex ratio in 2011 was 943 females per 1000 males.
This question belongs to: Accountancy and Statistics Statistics
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Practice More Statistics Questions

Question #1
According to Census 2011, the population density of India (persons per sq km) is:
A. 324
B. 455
C. 282
D. 382
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Correct Answer: Option D

Explanation:
The population density of India in 2011 was 382 persons per square kilometer.
This question belongs to: Accountancy and Statistics Statistics
Question #2
Which of the following pairs of events are independent?
A. Selecting a student from a class: A = student is male, B = student plays on the football team (all footballers are male).
B. Rolling a die twice: A = first roll is 5, B = sum is 10.
C. Drawing two cards without replacement from a deck: A = first is an ace, B = second is an ace.
D. Tossing a fair coin twice: A = first toss is head, B = second toss is tail.
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Correct Answer: Option D

Explanation:
Coin tosses are independent. In A, without replacement, not independent. In B, outcome of first affects probability of sum. In D, P(B|A) >0 but P(B|A')=0, so not independent.
This question belongs to: Accountancy and Statistics Statistics
Question #3
If the events A and B are independent, P(A)=0.4, P(B)=0.5, then P(A'∩B') is:
A. 0.5
B. 0.3
C. 0.2
D. 0.9
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Correct Answer: Option B

Explanation:
P(A')=0.6, P(B')=0.5, independence gives 0.6×0.5=0.3.
This question belongs to: Accountancy and Statistics Statistics
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