This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A population has a mean of 53 and a standard deviation of 21 . A sample of 49 observations will be ... (Read 209 times)

waynest

  • Hero Member
  • *****
  • Posts: 553
on: Jun 24, 2018
A population has a mean of 53 and a standard deviation of 21 . A sample of 49 observations will be taken. The probability that the sample mean will be greater than 57.95 is _____.
 a. 0
  b. .0495
  c. .4505
  d. None of the answers is correct.

Question 2

Telephone calls arrive at the Global Airline reservation office in Louisville according to a Poisson distribution with a mean of 1.2 calls per minute.
 a. What is the probability of receiving exactly 1 call during a one-minute interval?
  b. What is the probability of receiving at most 2 calls during a one-minute interval?
  c. What is the probability of receiving at least 2 calls during a one-minute interval?
  d. What is the probability of receiving exactly 4 calls during a five-minute interval?
  e. What is the probability that at most 2 minutes elapse between 1 call and the next?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

scrocafella

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

a. .36
b. .88
c. .34
d. .135
e. .9093


waynest

  • Member
  • Posts: 553
Reply 2 on: Jun 24, 2018
Gracias!

hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

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?

Blood is approximately twice as thick as water because of the cells and other components found in it.

The nurse is using Standard Precautions to draw blood. The nurse is using Standard Precautions to draw blood.
Sample Exercise Program for Limited Older Adults (cont.) Sample Exercise Program for Limited Older Adults (cont.)
World Population Growth, 1750-2150 World Population Growth, 1750-2150
Population Growth Versus Stability Population Growth Versus Stability
Average Annual Growth Rates of Population by Country Group Average Annual Growth Rates of Population by Country Group
Demographic transition model for changes in population growth rates and sizes, correlated with long- Demographic transition model for changes in population growth rates and sizes, correlated with long-
Video: Cataract

For a complete list of videos, visit our video library