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Sagot :
Answer: hello your question has some missing information attached below is the missing information
- we fail to reject H0 hence μ1 = μ2
- mean difference ( d ) = -2.444
Step-by-step explanation:
H0 : μ1 = μ2
Ha : μ1 ≠ μ2
where : μ1 = mean number of errors made in pretest
μ2 = mean number of errors made in post test
n = 9
attached below is the detailed solution
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