NPTEL Data Analytics with Python Week 3 Assignment Answers 2024

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NPTEL Data Analytics with Python Week 3 Assignment Answers 2024

1. Why one should not go for sampling?

  • It is less costly to administer than a census
  • The person authorising the study is comfortable with the sample.
  • Because the research process is sometimes destructive
  • None of the above
Answer :- For Answer Click Here

2. Stratified random sampling is a method of selecting a sample in which

  • the sample is first divided into strata
  • various strata are selected from the sample
  • The population is first divided into strata, and then random samples are drawn from each stratum
  • None of the above
Answer :- For Answer Click Here

3. If the true proportion of customers who are below 20 years is P=0.35, what is the probability that a sample size of 100 yields a sample proportion between 0.3 to 0.4

  • 0.961
  • 0.827
  • 0.706
  • 0.53
Answer :- For Answer Click Here

4. Calculate the probability of getting 12 heads in 20 attempts from a fair coin.

  • 0.120
  • 0.240
  • 0.280
  • 0.301
Answer :- 

5. A question paper contains 90 multiple-choice questions. Each correct answer carries 1 mark. There are 4 alternative answers (A, B, C or D), of which only one is correct. Mr X answers these questions randomly (i.e. without preparation). What is the probability that X gets at least 10 marks?

  • 0.9997
  • 0.7894
  • 0
  • 0.001
Answer :- 

6. On average, 5 % of items supplied by manufacturer X are defective. If a batch of 10 items is inspected: what is the probability that 2 items are defective

  • 0.065
  • 0.075
  • 0.085
  • 0.095
Answer :- For Answer Click Here

7. A car distributor in City Y experiences an average of 2.5 car sales daily. Find the probability that on a randomly selected day, they will sell 5 car:

  • 0.0668
  • 0.544
  • 0.082
  • 0.205
Answer :- 

8. In question 7, Find the probability that on a randomly selected day, they will sell no cars::

  • 0.0668
  • 0.544
  • 0.082
  • 0.205
Answer :- 

9. In question 7, Find the probability that on a randomly selected day, they will sell at most 2 cars:

  • 0.0668
  • 0.544
  • 0.082
  • 0.205
Answer :- 

10. In question 7, Find the probability that on a randomly selected day, they will sell exactly one car:

  • 0.0668
  • 0.544
  • 0.082
  • 0.205
Answer :- For Answer Click Here