18211 Introduction to Statistics Summer 2018 Quiz: Quiz 10.1, 10.3 This tion: 1

Question

18211 Introduction to Statistics Summer 2018 Quiz: Quiz 10.1, 10.3 This tion: 1 11 of 20 (0 complete) Complete parts (a) through (c) below (a) Determine the critical values for a nght-tailed test of a population mean at the ?:0 05 level of significance with 20 degrees of freedom P) Determine the critic al values) for a len tailed test of a population mean at the ?-0 01 level of significance based on a sample size of n. 10. (c) Determine the critical value(s) for a test of a population mean at the ? = 0 01 level of significance based on a sample size of n=17 ?Click here to view the t-Distribution Area in Right Tail Rond to thre decimal places as necded) (b) tcnt LML?(Round to three decimal places as needed ) (c) tcr,-| ?|?(Round to three decimal places as needed ) nter your answer in each of the answer boxes

Explanation / Answer

solution:-
(a) given that alpha = 0.05 , df = 20
the critical value for a right tailed test t = 1.725
(b)given that alpha = 0.01 , df = 9

the critical value for a left tailed test t = - 2.821

(c) given that alpha = 0.01 , df = 16
the t critical value for a two tailed test is t = 2.921

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