ACET (Actuarial Common Entrance Test) Statistics: Questions 189 - 194 of 201

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Question 189

Question MCQ▾

Let X and Y be two events such that which of the following is incorrect?

Choices

Choice (4)Response

a.

b.

X and Y are independent

c.

d.

Question does not provide sufficient data or is vague

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Question 190

Question MCQ▾

Three coins are tossed simultaneously. Consider the event E ‘three heads or three tails’ , F ‘at least two heads’ and G ‘at most two heads’ . Of the pairs and which are independent?

Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

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Question 191

Question MCQ▾

If the probability of a defective bolt is . Find the mean and standard deviation for the distribution in a total of 400.

Choices

Choice (4)Response

a.

40,6

b.

50,40

c.

100,40

d.

40,36

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Question 192

Question MCQ▾

While shuffling a pack of 52 playing cards, 2 are accidentally dropped. Find the probability that the missing cards are of different colours.

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 193

Question MCQ▾

For a bivariate data, you are given the following information:

Find the coefficient of correlation between X and Y series.

Choices

Choice (4)Response

a.

0.8

b.

0.9

c.

0.723

d.

0.45

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Question 194

Question MCQ▾

If X has poisson distribution with parameter and Find Given, .

Choices

Choice (4)Response

a.

0.8120

b.

0.9120

c.

0.1988

d.

0.8012

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