Question 524874: Consider a t distribution with 7 degrees of freedom. Compute P(-1.29 < t < 1.29). Round your answer to at least three decimal places.
Consider a t distribution with 18 degrees of freedom. Find the value of c such that P(t<= c) = 0.05. Round your answer to at least three decimal places.
P(-1.29 < t < 1.29) =
c =
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Consider a t distribution with 7 degrees of freedom.
Compute P(-1.29 < t < 1.29). Round your answer to at
least three decimal places.
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Using a TI-84 Plus calculator:
P(-1.29 < t < 1.29) = tcdf(-1.29,1.29,7) = 0.7620
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Consider a t distribution with 18 degrees of freedom. Find the value of c such that P(t<= c) = 0.05. Round your answer to at least three decimal places.
Find the t-value with df = 18 and a left tail of 5%
invT(0.05,18) = -1.7341
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Cheers,
Stan H.
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