« previous next »

Author Question: A random sample of 25 statistics examinations was selected. The average score in the sample was 76 ... (Read 115 times)

Metfan725

  • Hero Member
  • *****
  • Posts: 552
on: Jun 24, 2018
A random sample of 25 statistics examinations was selected. The average score in the sample was 76 with a variance of 144 . Assuming the scores are normally distributed, the 99 confidence interval for the population average examination score is _____.
 a. 70.02 to 81.98
  b. 69.82 to 82.18
  c. 70.06 to 81.94
  d. 69.29 to 82.71

Question 2

Excel's EXPON.DIST function has how many inputs?
 a. 2
  b. 3
  c. 4
  d. 5


Beatricemm

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

d

Answer to Question 2

b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Random, regular, and clumped distributions. Random, regular, and clumped distributions.
Sandia ear-plug-sized samplers hang poised to sample gases relevant to climate and weather. Sandia ear-plug-sized samplers hang poised to sample gases relevant to climate and weather.
Sample Program for Changing Daily Caloric Intake (cont.) Sample Program for Changing Daily Caloric Intake (cont.)
Selected Antifungal Drugs Selected Antifungal Drugs
Sample prescriptions of antibiotics for prophylaxis against infective endocarditis. Sample prescriptions of antibiotics for prophylaxis against infective endocarditis.
Sample budget spreadsheet form for first year of business. Sample budget spreadsheet form for first year of business.
Video: Secretin (inhibiting gastric acid secretion), Cholecystokinin (fat digestion) & Cholecystokinin

For a complete list of videos, visit our video library