Author Question: The daily revenue at a university snack bar has been recorded for the past five years. Records ... (Read 640 times)

danielfitts88

  • Hero Member
  • *****
  • Posts: 535
The daily revenue at a university snack bar has been recorded for the past five years. Records indicate that the mean daily revenue is 1200 and the standard deviation is 400. The distribution is skewed to the right due to several high volume days (football game days). Suppose that 100 days are randomly selected and the average daily revenue computed. Which of the following describes the sampling distribution of the sample mean?
 
  A) skewed to the right with a mean of 1200 and a standard deviation of 400
  B) normally distributed with a mean of 120 and a standard deviation of 40
  C) normally distributed with a mean of 1200 and a standard deviation of 400
  D) normally distributed with a mean of 1200 and a standard deviation of 40

Question 2

IQ test scores are normally distributed with a mean of 104 and a standard deviation of 16. An individual's IQ score is found to be 115. Find the z-score corresponding to this value.
 
  A) 0.69 B) 1.45 C) -0.69 D) -1.45



parker125

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

D

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

parker125

  • Sr. Member
  • ****
  • Posts: 332

 

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?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

For a complete list of videos, visit our video library