Assignment 7 - Statistical Inference for One Population

Name: ______________________________

Circle your lab meeting time:
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 __________.