Author Question: The fact that the sampling distribution of the sample mean can be approximated by a normal ... (Read 179 times)

ts19998

  • Hero Member
  • *****
  • Posts: 531
The fact that the sampling distribution of the sample mean can be approximated by a normal probability distribution whenever the sample size is large is based on the _____.
 a. central limit theorem
  b. fact that there are tables of areas for the normal distribution
  c. assumption that the population has a normal distribution
  d. normal probability theorem

Question 2

Shoppers enter Hamilton Place Mall at an average of 120 per hour.
 a. Define the random variable in words for this experiment.
  b. What is the probability that exactly 5 shoppers will enter the mall between noon and 1:00 P.M.?
  c. What is the probability that exactly 5 shoppers will enter the mall between noon and 12:05 P.M.?
  d. What is the probability that at least 35 shoppers will enter the mall between 5:00 and 5:10 P.M.?



jliusyl

  • Sr. Member
  • ****
  • Posts: 328
Answer to Question 1

a

Answer to Question 2

a. x = the number of shoppers entering the mall in a one-hour period
b. .0000
c. .0378
d. .0015



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Everyone has one nostril that is larger than the other.

For a complete list of videos, visit our video library