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

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 18 degrees of freedom. 2.214 (Round to three decimal places as needed.) (b) Find the t-value such that the area in the right tail is 0.05 with 22 degrees of freedom. 1.717 (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 21 degrees of freedom. -2.080 (Round to three decimal places as needed.) (d) Find the critical t-value that corresponds to 98% confidence. Assume 29 degrees of freedom. (Round to three decimal places as needed.)

Explanation / Answer

a) for right tail and 18 degree of freedom t =2.214

b) for 0.05 level in right tail and 22 degree of freedom t=1.717

c)for 0.025 level in left and 21 degree of freedom t =2.080

d) for 98% confidence and 29 degrees of freedom ; critical value of t =2.462

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