ISS (Statistical Services) Statistics Paper I: Questions 397 - 400 of 1595
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Question 397
Question MCQ▾
In a sequence of independent Bernoulli trails, if denotes the number of failures before (fixed) success, then the expected value of will be ________
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | None of the above |
Question 398
Question MCQ▾
Twenty sheets of copper alloy were examined for surface flaws. The frequency of the number of sheets with a given number of flaws per sheet was as follows:
Number of flaws | Frequency |
0 | 4 |
1 | 3 |
2 | 5 |
3 | 2 |
4 | 4 |
5 | 1 |
What is the probability of finding a sheet chosen at random which contains 3 or more surface flaws?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | Question does not provide sufficient data or is vague |
Question 399
Question MCQ▾
Suppose we are tossing a fair die. If we say each of these outcomes has probability then which perspective of probability are we using?
Choices
Choice (4) | Response | |
---|---|---|
a. | Classical | |
b. | Empirical | |
c. | Classical and Empirical | |
d. | Question does not provide sufficient data or is vague |
Question 400
Question MCQ▾
Consider be a sequence of Bernoulli distribution. Which of the following two statements are correct regarding ?
Statement 1:
Statement 2:
Choices
Choice (4) | Response | |
---|---|---|
a. | Only Statement 2 is correct. | |
b. | Neither Statement 1 nor Statement 2 is correct. | |
c. | Only Statement 1 is correct. | |
d. | Both a. and c. are correct |