Chapter 4 quiz - 4-5 Quiz_ Python Functions
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School
Southern New Hampshire University *
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Course
243
Subject
Mathematics
Date
Jan 9, 2024
Type
docx
Pages
5
Uploaded by EarlSteel9150
Question 1
3 / 3 points
The null and alternative hypotheses for a hypothesis test of the difference in two population means are:
Null Hypothesis:
Alternative Hypothesis:
Notice that the alternative hypothesis is a two-tailed test. Suppose ttest_ind method from scipy module is used to perform the test and the
output is (-1.99, 0.0512). What is the P-value for this hypothesis test?
Select one.
Question options:
0.0512
1.99
-1.99
0.0256
Question 2
3 / 3 points
Which of the following Python methods is used to perform a hypothesis test for the difference in two population proportions? Select
one.
Question options:
prop_hypothesis_test from statsmodels module
prop_1samp_hypothesistest from pandas module
proportions_ztest from statsmodels module
prop_1samp_ztest from numpy module
Question 3
3 / 3 points
What are the inputs to ttest_ind method in the scipy module? Select one.
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Question options:
dataframes of values from each sample and optional equal variance
indicator
null and alternative hypothesis values
z-score and the corresponding P-value
test statistic and the P-value
Question 4
3 / 3 points
In this course, the Python methods for hypothesis tests return two-
tailed probability values. Suppose a one-tailed alternative hypothesis is
used. How can you obtain a one-tailed probability value (P-Value)? Select one.
Question options:
Divide the result by 2
Multiply the result by 2
Multiply the result by 4
Divide the result by 4
Question 5
3 / 3 points
Which of the following Python methods is used to perform a paired t-
test for the difference in two population means? Select one.
Question options:
ttest_rel from scipy module
ttest_ind from scipy module
proportions_ztest from statsmodels module
paired_ttest from scipy module