BST 322 Week 2 Assignment
Week 2 Assignment
1. (
1 pt)
What is the probability of rolling a four with a six sided die?

What is the probability that a person can roll a four 3 times in a row? (assume that rolling the die
each time does not affect the outcome of the next roll)

2. (
1 pt)
Population A and Population B both have a mean height of 70.0 inches with an SD of 6.0.
random sample of 50 people is picked from population A, and random sample of 20 people is se-
lected from Population B.
Which sample mean will probably yield a more accurate estimate of its
population mean?
Why?
A

3. (
1 pt)
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 4.7mm with an SD of 1.1.
Using a
t
dis-
tribution table and/or StatCrunch, what are the confidence limits for a 95% confidence interval?

For a 99% confidence interval?