# WS4Practice.xls - t Test for the Hypothesis of the Mean...

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t Test for the Hypothesis of the Mean Data 123.5 Level of Significance 0.01 Sample Size 20 Sample Mean 123.06 Sample Standard Deviation 1.354 Intermediate Calculations Standard Error of the Mean 0.3028 Degrees of Freedom 19 -1.4533 Two-Tail Test Lower Critical Value -2.8609 Upper Critical Value 2.8609 0.1625 Do not reject the null hypothesis Calculations Area For one-tailed tests: TDIST value 0.0812321 1-TDIST value 0.9187679 Lower-Tail Test Lower Critical Value -2.5395 0.0812 Do not reject the null hypothesis Upper-Tail Test Upper Critical Value 2.5395 0.9188 Do not reject the null hypothesis Null Hypothesis m = t Test Statistic p -Value p -Value p -Value
DIRECTIONS: Enter the hypothesis test amount. (2 points) Enter alpha value. (2 points) Enter the sample size. (2 points) Enter the sample mean. (2 points) Enter the sample standard deviation. (2 points) Access this helpful video:
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