t-distribution

What is t_0.10 to its right with df=14?

• 1.761

• 1.345

• 1.771

• 1.350

It is used with small samples taken from population that is approximately normal.

• z-distribution

• t-distribution

• population variance

• sample mean

What is the t-value in the Table of t-Critical values of t_0.05 for df = 10 when it is right-tailed?

• 1.812

• 1.833

• 0.703

• 0.700

What is the critical value of t when the area to the right tail of t_0.025 given the degree of freedom 25?

• 0.685

• 0.684

• 2.064

• 2.060

• 1.729

• 1.328

• 1.325

• 1.725

Which is the t-value of 90% percentile with n=20?

• 1.328

• 1.325

• 1.729

• 1.725

What is the t-value when the area on the left-hand tail of the t-distribution is 0.05, given that df = 15.

• -1.337

• -1.341

• -1.761

• -1.753

Sample size 22 is a simple random sample selected from a normally distributed population of 90% percentile. What is the t-value?

• 1.717

• 1.721

• 1.323

• 1.321

• 2.764

• 2.718

• 1.363

• 1.372

Find the t-value 95th percentile , given the number of samples 12.

• 3.106

• 1.782

• 1.796

• 3.055