In: Statistics and Probability
Here
a)
Null and alternative hypothesis would be
Ho: µ = 325
Ha: µ < 325
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To calculate test statistic and P-Value we will use Ti 83/84
Follow the path
STAT...TESTS...T-Test
Enter values as
result is
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b)
Test Statistic = -1.228
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c)
P-Value = 0.1135
Note : Please check rounding instructions for Test Statistic and P-value and round them accordingly.