Question 234358: As the number of degrees of freedom for a t distribution increases, the difference between the t distribution and the standard normal distribution is?
For a one-tailed test (lower tail), a sample size of 15 at 95% confidence, t =
For a one-tailed test (upper tail), a sample size of 16 at 90% confidence, t =
A two-tailed test is performed at 95% confidence. The p-value is determined to be 0.09. The null hypothesis is
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! As the number of degrees of freedom for a t distribution increases, the difference between the t distribution and the standard normal distribution is?
As n increases the difference gets smaller.
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For a one-tailed test (lower tail), a sample size of 15 at 95% confidence,
t = invT(0.05,14) = -1.7613
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For a one-tailed test (upper tail), a sample size of 16 at 90% confidence,
t = invT(0.95,15) = 1.7531
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A two-tailed test is performed at 95% confidence. The p-value is determined to be 0.09. The null hypothesis is
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Fail to reject Ho.
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Cheers,
Stan H.
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