# Data Analytics with Python | NPTEL | Week 4 Assignment Solutions

This set of MCQ(multiple choice questions) will help you with the answers of Data Analytics with Python NPTEL Week 4 Assignment Solutions.

You should practice these questions to improve fundamentals of Data Analytics with Python needed for various interviews (like company interview, campus interview, walk-in interview), entrance exams, placements and other competitive exams. All the questions in this particular section are based on only “Data Analytics with Python NPTEL Week 4 Assignment Solutions“.

### Course layout

NOTE: You can check your answer immediately by clicking show answer button. Moreover, this set of “Data Analytics with Python NPTEL Week 4 Assignment Solution” contains 10 questions.

Now, start attempting the quiz.

### Data Analytics with Python NPTEL Week 4 Assignment Solutions

Q1. If we have a sample size of 20 and population standard deviation is known, we will use:

a) t- test for hypothesis testing
b) z-test for hypothesis testing
c) both t and z test
d) F-test

Q2. Null hypothesis, Ho: mu1- mu2 = 0 is a:

a) Upper tail test
b) Lower tail test
c) Two tail test
d) F-test

Q3. The quality-control manager at a Li-BATTERY factory needs to determine whether the mean life of a large shipment of Li-Battery is equal to the specified value of 375 hours. The process standard deviation is known to be 100 hours. A random sample of 64 batteries indicates a sample mean life of 350 hours.
State the null and alternative hypotheses

a) Mu = 375
b) Mu ≤ 375
c) Mu = 350
d) Mu ≥ 350

Q4. The quality-control manager at a Li-BATTERY factory needs to determine whether the mean life of a large shipment of Li-Battery is equal to the specified value of 375 hours. The process standard deviation is known to be 100 hours. A random sample of 64 batteries indicates a sample mean life of 350 hours.
At the alpha = 0.05 level of significance is there any evidence that the mean life is different from 375 hours?

a) Yes, there is
b) No, there is not
c) None of these

Data Analytics with Python NPTEL Week 4 Assignment Solutions

Q5. For one-tailed test, the test statistic z is determined to be zero. The p-value for this test is:

a) Zero
b) -0.5
c) +0.5
d) 1.0

Q6. The error of rejecting a true null hypothesis is:

a) Type I error
b) Type II error
c) is the same as Beta
d) committed when not enough information is available

Q7. The mean cost of a hotel room in a city is said to be \$168 per night. A random sample of 25 hotels resulted in X-bar = \$172.50 and sample standard deviation s = 15.40. Calculate the t statistic.

a) 2
b) -2
c) 1.46
d) -1.46

Data Analytics with Python NPTEL Week 4 Assignment Solutions

Q8. In hypothesis testing if the null hypothesis is rejected,

a) no conclusions can be drawn from the test
b) the alternative hypothesis is true
c) the data must have been accumulated incorrectly
d) the sample size has been too small

Q9. In the hypothesis testing procedure, alpha is

a) 1 – the level of significance
b) the critical value
c) the confidence level
d) the level of significance

Q10. If a hypothesis is rejected at the 5% level of significance, it

a) will always be rejected at the 1% level
b) will always be accepted at the 1% level
c) will never be tested at the 1% level
d) May be rejected or not rejected at the 1% level

Data Analytics with Python NPTEL Week 4 Assignment Solutions

<< Prev- Data Analytics with Python Week 3 Assignment Solutions

>> Next- Data Analytics with Python Week 5 Assignment Solutions

`DISCLAIMER: Use these answers only for the reference purpose. Quizermania doesn't claim these answers to be 100% correct. So, make sure you submit your assignments on the basis of your knowledge.`

Programming in Java NPTEL week 1 quiz answers

Nptel – Deep Learning assignment solutions

For discussion about any question, join the below comment section. And get the solution of your query. Also, try to share your thoughts about the topics covered in this particular quiz.