Exhibit 10-2
the Following Information Was Obtained from Matched Samples $\mu$

question 87

Multiple Choice

Exhibit 10-2
The following information was obtained from matched samples.
The daily production rates for a sample of workers before and after a training program are shown below.
-Refer to Exhibit 10-2. The null hypothesis to be tested is H₀: $\mu$ _d = 0. The test statistic is

• A)-1.96
• B)1.96
• C)0
• D)1.645

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