Author Question: We intend to estimate the average driving time of a group of commuters. From a previous study, we ... (Read 23 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
We intend to estimate the average driving time of a group of commuters. From a previous study, we believe that the average time is 42 minutes with a standard deviation of 7 minutes.
 
  We want our 90 percent confidence interval to have a margin of error of no more than plus or minus 4 minutes. What is the smallest sample size that we should consider?
  A) 2 B) 9 C) 34 D) 3

Question 2

Consider a completely randomized design with five treatments. How many pairwise comparisons of treatments are made in a Bonferroni analysis?
 
  A) 5 B) 20 C) 10 D) 5 = 120



succesfull

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

B

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

For a complete list of videos, visit our video library