Use Appendix B. 5 to locate the value of t under the following conditions.

The sample size is 12 and the level of confidence is 95%

The sample size is 20 and the level of confidence is 90%

The sample size is 8 and the level of confidence is 99%.

T - value for the

* Sample Size is 12 and level of confidence 95%

Degrees of freedom = Sample Size - 1 = 12 - 1 = 11

t - value for Degrees of freedom 11 and 95% level of confidence is 2.201

* Sample Size is 20 and level of confidence is 90%

Degrees of freedom = Sample Size - 1 = 20 - 1 = 19

t - value for Degrees of freedom 19 and 90% level of confidence is 1.729

* Sample Size is 8 and Level of confidence is 99%

Degrees of freedom = Sample size - 1 = 8 - 1 = 7

t - value for Degrees of freedom 7 and 99% level of confidence is 3.500