a) Consider a t distribution with 21 degrees of freedom. Compute P( t ≤ 1.28). Round your answer to at least three decimal places. P( t ≤ 1.28) = (b) Consider a t distribution with 18 degrees of freedom. Find the value of c such that P( -c < t < c) = 0.90. Round your answer to at least three decimal places. c =

a) Consider a t distribution with 21 degrees of freedom. Compute P( t ≤ 1.28). Round your answer to at least three decimal places. P( t ≤ 1.28) = (b) Consider a t distribution with 18 degrees of freedom. Find the value of c such that P( -c < t < c) = 0.90. Round your answer to at least three decimal places. c =

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.CR: Chapter 13 Review

Problem 32CR

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a) Consider a t distribution with 21 degrees of freedom. Compute P( t ≤ 1.28). Round your answer to at least three decimal places.

P( t ≤ 1.28) =

(b) Consider a t distribution with 18 degrees of freedom. Find the value of c such that P( -c < t < c) = 0.90. Round your answer to at least three decimal places.

c =

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