Author Question: The fact that the sampling distribution of the sample mean can be approximated by a normal ... (Read 274 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?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

For a complete list of videos, visit our video library