An urn contains 10 white balls and 3 black balls. Four balls are drawn from the urn without replacement. Let a random variable X be defined as the number of white balls drawn, what is the possible values X can take ?
1, 2, 3, 4
1, 2, . . . , 10
0, 1, 2, 3, 4
0, 1, 2, . . . , 10
A fair coin is tossed three times. If X denote the number of heads followed immediately by a tail, then what is the expected value of X?
A student of B.Sc. Online Degree ran out of time while taking a quiz-exam and plans to guess on last 5 questions. Each question has 4 possible choices, one of which is correct. If the random variable X represents the number of questions answered correctly, among the last 5 questions, then find the Var(X). (Enter the answer correct to two decimal places)
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The IIT Madras BS Statistics for Data Science I (Stats 1) End Term paper sat on 7 Aug 2022, in the May 2022 term: 15 questions for 40 marks in 180 minutes. The first 3 questions are below. Sign in with Google — it is free — to see the whole paper with its answers and explanations, in learning mode or as a timed mock test.
| Feature | Stats 1 End Term 7 Aug 2022 at a glance |
|---|---|
| Term | May 2022 term |
| Subject | Statistics for Data Science I |
| Course code | BSMA1002 |
| Questions | 15 |
| Marks | 40 |
| Duration | 180 min |
| MCQ | 7 |
| Numerical | 7 |
| MSQ | 1 |
| Official paper | IIT M FOUNDATION DIPLOMA ENDTERM QPD1 07 Aug 2022 IBA NS |
| Negative marking | No negative marking. |
| Updated |
