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Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 2SE: What is a sample space?
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Question
Transcribed Image Text:The accompanying data file contains information on matched sample observations whose differences are normally distributed.
Click here for the Excel Data File
Let the difference be defined as Sample 1 - Sample 2.
a. Construct the 95% confidence interval for the mean difference μD.
Note: Negative value should be indicated by a minus sign. Round final answers to 2 decimal places.
Confidence interval is
b. Specify the competing hypotheses in order to test whether the mean difference differs from zero.
Ho:
H₁-H₂
>
to
d. Interpret the results at a = 0.05.
0; versus HA:
H1-H₂
c. Using the confidence interval from part a, are you able to reject Ho?
Ⓒ Yes
O No
<
0
Ⓒ We conclude that the mean difference differs from zero.
O We cannot conclude that the mean difference differs from zero.
O We conclude that population mean 2 is greater than population mean 1.
O We cannot conclude that population mean 2 is greater than population mean 1.
Transcribed Image Text:Sample_1 Sample_2
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