Question 438048
Consider a t distribution with 6 degrees of freedom.  Compute P(t>-1.60)  round the answer to three decimal places.  
P(t > -1.6 when df=6) = tcdf(-1.6,100,6) = 0.9196
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Find the value of c such that P(-c<t<c)=0.99.  Round to 3 decimal places.
That condition leave a left-tail of 0.005 and a right-tail of 0.005.
invT(0.005,6) = -3.7074
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c = 3.7074
Note: I'm assuming df = 6.
I used a TI-84 to find the values listed.
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Cheers,
Stan H.