Determine the t-value in each of the cases Click the icon to view the table of a

Question

Determine the t-value in each of the cases Click the icon to view the table of areas under the t-distribution. (a) Find the t-value such that the area in the right tail is 0.02 with 30 degrees of freedom. (Round to three decimal places as needed.) (b) Find the t-value such that the area in the right tail is 0.20 with 26 degrees of freedom (Round to three decimal places as needed.) (c) Find the t-value such that the area left of the t-value is 0.025 with 7 degrees of freedom. [Hint: Use symmetry.] (Round to three decimal places as needed.) (d) Find the critical t-value that corresponds to 90% confidence. Assume 27 degrees of freedom (Round to three decimal places as needed.)

Explanation / Answer

From the t table output, the required t-values will be:

a) t = 2.147

b) t = 0.856

c) t = -2.365

d) t = 1.703

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