We are looking forward to sharing many exciting stories and examples of analytics with all of you using python programming language. This course includes examples of analytics in a wide variety of industries, and we hope that students will learn how you can use analytics in their career and life. One of the most important aspects of this course is that you, the student, are getting hands-on experience creating analytics models; we, the course team, urge you to participate in the discussion forums and to use all the tools available to you while you are in the course!
INTENDED AUDIENCE : Management, Industrial Engineering and Computer Science Engineering Students
INDUSTRY SUPPORT : Any analytics company
PRE-REQUISITES : Basic knowledge of Python but not necessary
Nptel Data Analytics with Python Week 4 Assignment Answer
Course layout
Nptel Data Analytics with Python Week 4 Assignment Answer
Week 4 : Assignment 4
Due date: 2025-02-19, 23:59 IST.
Assignment not submitted
1 point
If we have a sample size of 20 and population standard deviation is known, we will use:
t- test for hypothesis testing
z-test for hypothesis testing
both t and z test
F-test
1 point
Null hypothesis, Ho: m1– m2 = 0 is a
Upper tail test
Lower tail test
Two tail test
F Test
1 point
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
Mu = 375
Mu ≤ 375
Mu = 350
Mu ≥ 350
1 point
In question 3, At the alpha = 0.05 level of significance is there any evidence that the mean life is different from 375 hours?
Yes, there is
No, there is not
None of the above
1 point
For one-tailed test, the test statistic z is determined to be zero. The p-value for this test is
zero
-0.5
+0.5
1.00
1 point
The error of rejecting a true null hypothesis is
a Type I error
a Type II error
is the same as b
committed when not enough information is available
1 point
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.
2
-2
1.46
-1.46
1 point
In hypothesis testing if the null hypothesis is rejected
no conclusions can be drawn from the test
the alternative hypothesis is true
the data must have been accumulated incorrectly
the sample size has been too small
1 point
In the hypothesis testing procedure, α is
1 – the level of significance
the critical value
the confidence level
level of significance
1 point
If a hypothesis is rejected at the 5% level of significance, it
will always be rejected at the 1% level
will always be accepted at the 1% level
will never be tested at the 1% level
may be rejected or not rejected at the 1% level