[Solved] What is wrong with this hypothesis test code?from scipy.stats import ttest_ind sample1 = [1, 2, 3] sample2 = [4, 5] t_stat, p_val = ttest_ind(sample1, sample2, equal_var=False, alternative='greater')... | SciPy

SciPy - Statistical Tests

What is wrong with this hypothesis test code?

from scipy.stats import ttest_ind
sample1 = [1, 2, 3]
sample2 = [4, 5]
t_stat, p_val = ttest_ind(sample1, sample2, equal_var=False, alternative='greater')
print(p_val)

Aequal_var cannot be False

BSamples must be the same length

CThe 'alternative' parameter is not supported in this SciPy version

Dt_stat and p_val are reversed

Step-by-Step Solution

Solution:

Step 1: Check SciPy ttest_ind parameters
Older SciPy versions do not support 'alternative' parameter.
Step 2: Identify parameter compatibility issue
Using 'alternative' causes error if SciPy version is below 1.6.0.
Final Answer:
The 'alternative' parameter is not supported in this SciPy version -> Option C
Quick Check:
'alternative' param requires newer SciPy [OK]

Quick Trick: 'alternative' param needs SciPy 1.6.0+ [OK]

Common Mistakes:

MISTAKES

Assuming samples must be equal length
Misunderstanding equal_var usage
Swapping output variables

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What is wrong with this hypothesis test code?

Step 1: Check SciPy ttest_ind parameters

Step 2: Identify parameter compatibility issue

Final Answer:

Quick Check:

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