# EBook Problems StudentsT

From SOCR

## 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

### 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

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