Find the values for each a. t/2 and n = 18 for the 99% confidence interval forth

Question

Find the values for each a. t/2 and n = 18 for the 99% confidence interval forthe mean b. t/2 and n = 23 for the 95% confidence interval forthe mean. c. t/2 and n = 15 for the 98% confidence interval forthe mean. d. t/2 and n = 10 for the 90% confidence interval forthe mean. e. t/2 and n = 20 for the 95% confidence interval forthe mean. Find the values for each a. t/2 and n = 18 for the 99% confidence interval forthe mean b. t/2 and n = 23 for the 95% confidence interval forthe mean. c. t/2 and n = 15 for the 98% confidence interval forthe mean. d. t/2 and n = 10 for the 90% confidence interval forthe mean. e. t/2 and n = 20 for the 95% confidence interval forthe mean.

Explanation / Answer

(a) Given =0.01,       t(=0.005,df=n-1=17)= -2.8982(check student t table) (b) Given =0.05,      t(=0.025,df=n-1=22)= -2.0738 (checkstudent t table) (c) Given =0.02,      t(=0.01,df=n-1=14)= -2.6244 (checkstudent t table) (d) Given =0.1,      t(=0.05,df=n-1=9)= -1.8331(check student t table) (e) Given =0.05,      t(=0.025,df=n-1=19)= -2.093 (checkstudent t table)

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