Reference no: EM131460441

Assignment

Question 1: Please discuss the following;

- What are the characteristics of the normal curve?
- How does a normal curve differ from a standard normal curve?

Question 2:While the normal curve is actually a family of normal curves, each of them can be converted into the Standard Normal Distribution by the use of z-scores. Can anyone tell how to do this?

Question 3: Can anyone tell us why the area under the normal curve is 1?

Question 4:While a probability can be any number between 1 and 0, when you are working with a probability distribution you need to look at these probabilities a little differently. In a probability distribution:

- A probability of 1 means that the distribution has no standard deviation.
- A probability of 0 cannot exist, can anyone tell us why?

Question 5:What is the standard normal curve? Why is it needed? Explain how you use the standard normal table to compute the probability P(Z < 2.3).

Question 6:

- What is sampling error?
- How do you calculate sampling error?
- How do you calculate the number of subjects you should select?
- What is the Central Limit Theorem?
- How does the Central Limit Theorem affect sampling?