« previous next »

Author Question: The average natural gas bill for a random sample of 21 homes in the 19808 zip code during the month ... (Read 91 times)

Pineappleeh

  • Hero Member
  • *****
  • Posts: 585
on: Jun 24, 2018
The average natural gas bill for a random sample of 21 homes in the 19808 zip code during the month of March was 311.90 with a sample standard deviation of 51.60. The 90 confidence interval around this sample mean is ________.
 
  A) (292.46, 331.34)
  B) (285.98, 337.82)
  C) (278.09, 345.71)
  D) (266.82, 356.98)

Question 2

A recent study reported that 73 of Americans could only converse in one language. A random sample of 130 Americans was randomly selected. What is the probability that 100 or fewer of these Americans could only converse in one language?
 
  A) 0.6389
  B) 0.7510
  C) 0.8413
  D) 0.9245
Business Statistics ¦ Donnelly ¦ 2nd Edition
Buy Test-Bank


yahahah24021

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jun 24, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Sample hypoglycemic protocol. Sample hypoglycemic protocol.
Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough
Sample Exercise Prescription for Weight Training: Beginner Sample Exercise Prescription for Weight Training: Beginner
Sample prescriptions of drugs for oral herpes infection. Sample prescriptions of drugs for oral herpes infection.
Philip wants to supplement his pension by $415 per month with income from his investments. His ... Philip wants to supplement his pension by $415 per month with income from his investments. His ...
Jamal plans to retire in 17 years. He is saving $2000 every start of the month in a retirement ... Jamal plans to retire in 17 years. He is saving $2000 every start of the month in a retirement ...
Video: Cerebral Cortex Animation

For a complete list of videos, visit our video library