### Assignment 7 - Statistical Inference for One Population

Name: ______________________________

Monday 9:15 Monday 12:15 Monday 3:15 Wednesday 9:15 Wednesday 12:15

1. The numbers t are: __________ (90%), __________ (95%), and __________ (99%).

S-PLUS code to find these is _____________________________.

The numbers z are: __________ (90%), __________ (95%), and __________ (99%).

2. The numbers t are: __________ (90%), __________ (95%), and __________ (99%).

S-PLUS code to find these is _____________________________.

The numbers z are: __________ (90%), __________ (95%), and __________ (99%).

3. The hand calculated 95% confidence interval for the population mean time until rat skin cancers disappear is _______________.

(Show your work on the back side of the paper.)

4. The S-PLUS calculated 95% confidence interval for the population mean time until rat skin cancers disappear is _______________.

5. The probability that a single value is below 98.25 is __________.

The probability that a mean of ten values is below 98.25 is __________.

The probability that a mean of 130 values is below 98.25 is __________.