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 |
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 |
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 |
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. |
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 |
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 |