Author Question: As the sample size increases, the variability among the sample means _____. a. increases b. ... (Read 191 times)

ericka1

  • Hero Member
  • *****
  • Posts: 544
As the sample size increases, the variability among the sample means _____.
 a. increases
  b. decreases
  c. remains the same
  d. depends upon the specific population being sampled

Question 2

A salesperson contacts 8 potential customers per day. From past experience, we know that the probability of a potential customer making a purchase is .10.
 a. Define the random variable in words for this experiment.
  b. What is the probability the salesperson will make exactly 2 sales in a day?
  c. What is the probability the salesperson will make at least 2 sales in a day?
  d. What percentage of days will the salesperson not make a sale?
  e. What is the expected number of sales per day?



lgoldst9

  • Sr. Member
  • ****
  • Posts: 372
Answer to Question 1

b

Answer to Question 2

a. x = the number of sales made out of 8 contacts
b. .1488
c. .1869
d. 43.05
e. .8



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

For a complete list of videos, visit our video library