The Following Samples Are Observations Taken from the Same Elements

question 18

Multiple Choice

The following samples are observations taken from the same elements at two different times: Perform a test of hypothesis to determine if the difference in the means of the distribution at the first time period is 10 units larger than at the second time period.Use a level of significance equal to 0.10.

• A)Because t = 1.98 > 2.0150,the null hypothesis must be rejected.
• B)Because t = 1.67 > 2.0150,the null hypothesis must be rejected
• C)Because t = 1.02 < 2.0150,the null hypothesis cannot be rejected.
• D)Because t = 0.37 < 2.0150,the null hypothesis cannot be rejected.

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