-Tests

Determine key characteristics of a t-distribution.

Mark is using a one-sample t-test on the following group:

Subject #15: 7.5 hours

Subject #27: 6 hours

Subject #48: 7 hours

Subject #80: 6.5 hours

Subject #91: 6.5 hours

Subject #59: 7 hours

Select the two TRUE statements.

• a.)
• The value for the degrees of freedom for Mark's sample population is five.
• b.)
• The value for the degrees of freedom for Mark's sample population is six.
• c.)
• Mark would use the population standard deviation to calculate a t-distribution.
• d.)
• The t-distribution that Mark uses has thicker tails than a standard normal distribution.
• e.)
• The t-distribution that Mark uses has thinner tails than a standard distribution.