Probability-Probability Distributions [ISS (Statistical Services) Statistics Paper I]: Questions 1 - 4 of 108
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Question 1
Question MCQ▾
Suppose that has the exponential distribution with rate parameter . Then which of the following statement is/are correct regarding it?
Choices
Choice (4) | Response | |
---|---|---|
a. | has the geometric distributions on with success parameter . | |
b. | has the geometric distributions on with success parameter . | |
c. | Both a. and b. are correct | |
d. | Question does not provide sufficient data or is vague |
Question 2
Question MCQ▾
Which of the following statement is/are correct?
Choices
Choice (4) | Response | |
---|---|---|
a. | Pascal distribution is a special case of negative binomial distribution on with parameter and , when k is a positive integer. | |
b. | Pascal distribution is a special case of Normal distribution with parameter , when | |
c. | The pdf of Pascal distribution is symmetric. | |
d. | All of the above |
Question 3
Question MCQ▾
If , then what will be the standard deviation of ?
Choices
Choice (4) | Response | |
---|---|---|
a. | 59.8 | |
b. | 261.2 | |
c. | 161.4 | |
d. | 120.5 |
Question 4
Question MCQ▾
Which of the following is skewness of a standardized Bernoulli distributed random variable which takes the value 1 with success probability of and the value 0 with failure probability of ?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |