Author Question: A ________ confidence interval might be most appropriate during the early stages of a research ... (Read 88 times)

craiczarry

  • Hero Member
  • *****
  • Posts: 527
A ________ confidence interval might be most appropriate during the early stages of a research project when little is known about the population's parameters and the project's researchers might still be gauging the parameters.
 
  A) 90
  B) 95
  C) 99
  D) 100

Question 2

Suppose the local Best Buy store averages 483 customers per day entering the facility with a standard deviation of 112customers. A random sample of 48 business days was selected.
 
  What is the probability that the average number of customers in the sample is between 480 and 500?A) 0.1579
  B) 0.2521
  C) 0.3377
  D) 0.4284


matt95

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

A

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

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

For a complete list of videos, visit our video library