Question 1
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The standard deviation of the length of bolts manufactured by a machine was 1 mm. A new machine with a supposedly lesser standard deviation is installed. A random sample of 100 bolts from the new machine showed a standard deviation of 0.5 mm. Based on this data, what is your conclusion at a significance level of 0.05, on the standard deviation of length of bolts manufactured by the new machine? Choose the correct options from the following (Select all that apply):
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The IIT Madras BS Statistics for Data Science II (Stats 2) End Term paper sat on 7 Aug 2022, in the May 2022 term: 19 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 2 End Term 7 Aug 2022 at a glance |
|---|---|
| Term | May 2022 term |
| Subject | Statistics for Data Science II |
| Course code | BSMA1004 |
| Questions | 19 |
| Marks | 40 |
| Duration | 180 min |
| MCQ | 4 |
| MSQ | 5 |
| Numerical | 10 |
| Official paper | IIT M FOUNDATION DIPLOMA ENDTERM QPD1 07 Aug 2022 IBA NS |
| Negative marking | No negative marking. |
| Updated |