BST 322 Week 2 Assignment
1.
What is the probability of rolling a four in the gambling dice game of craps (given two six
sided dice)?
What is the probability that a player can roll a four 3 times in a row (assume that
rolling the dice each time does not affect the outcome of the next roll)?

2.
Population A and Population B both have a mean height of 70.0 inches with an SD of
6.0.
A random sample of 30 people is picked from population A, and random sample of 50
people is selected from Population B.
Which sample mean will probably yield a more accurate
estimate of its population mean?
Why?

3.
Suppose we obtained data on vein size after application of a nitroglycerin ointment in a
sample of 50 patients.
The mean vein size is found to be 8.7mm with an SD of 2.1.
Using a
distribution table, what are the confidence limits for a 95% confidence interval?
For a 99%
confidence interval?
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