EBook Problems StudentsT

EBook Problems Set - Student's T Distribution

Problem 1

Estimate the critical value of t for a 95% confidence interval with df = 15

• Choose one answer.

(a) 2.131

(b) 1.17

(c) 1.71

(d) 3.45

Answer

 (a)

Problem 2

How does the shape, center, and spread of t-models change as its degrees of freedom increases?

• Choose one answer.

(a) The shape and center stays the same, but the spread becomes narrower.

(b) The shape and center stays the same, but the spread becomes wider.

(c) The shape and spread stays the same, but the center will increase.

(d) The shape and spread stays the same, but the center will decrease.

Answer

 (a)

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