Question 1
A new apparatus has been devised to replace the needle in administering vaccines. The apparatus, which is connected to a large supply of vaccine, can be set to inject different amounts of the serum, but the variance in the amount of serum injected to a given person must not be greater than .07 to ensure proper inoculation. A random sample of 25 injections was measured. Suppose the
p-value for the test is

State the proper conclusion using

Question 2
Which of the following represents the difference in two population means?
◦
p1 +
p2◦
μ1 -
μ2◦
p1 -
p2◦
μ1 +
μ2