Author Question: A ________ confidence interval might be most appropriate during the early stages of a research ... (Read 82 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?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

For a complete list of videos, visit our video library