(a)Consider atdistribution with13

degrees of freedom. ComputeP

t

1.78

. Round your answer to at least three decimal places.

P

t

1.78

=

(b)Consider atdistribution with4

degrees of freedom. Find the value ofc

such that=

P

<

c

<

t

c

0.99

. Round your answer to at least three decimal places.

c

=