This topic contains a solution. Click here to go to the answer

Author Question: The Harbour Island Ferry leaves on the hour and at 15-minute intervals. The time, x, it takes John ... (Read 185 times)

jc611

  • Hero Member
  • *****
  • Posts: 552
The Harbour Island Ferry leaves on the hour and at 15-minute intervals. The time, x, it takes John to drive from his house to the ferry has a uniform distribution with x between 10 and 20 minutes. One morning John leaves his house at precisely 8:00 A.M.
 a. What is the probability John will wait less than 5 minutes for the ferry?
  b. What is the probability John will wait less than 10 minutes for the ferry?
  c. What is the probability John will wait less than 15 minutes for the ferry?
  d. What is the probability John will not have to wait for the ferry?
  e. Suppose John leaves at 8:05 A.M. What is the probability John will wait (1) less than 5 minutes for the ferry; (2) less than 10 minutes for the ferry?
  f. Suppose John leaves at 8:10 A.M. What is the probability John will wait (1) less than 5 minutes for the ferry; (2) less than 10 minutes for the ferry?
  g. What appears to be the best time for John to leave home if he wishes to maximize the probability of waiting less than 10 minutes for the ferry?

Question 2

It is known that the variance of a population equals 484 . A random sample of 81 observations is going to be selected from the population.
 a. With an .80 probability, what statement can be made about the size of the margin of error?
  b. With an .80 probability, what sample size would have to be selected to provide a margin of error of 3 or less?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

hugthug12

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

a. .5
b. .5
c. 1
d. 0
e. (1) 0, (2) .5
f. (1) .5, (2) 1
g. 8:10

Answer to Question 2

a. There is a .80 probability that the sample mean will provide a margin of error of 3.129 or less.
b. 89




jc611

  • Member
  • Posts: 552
Reply 2 on: Jun 24, 2018
Thanks for the timely response, appreciate it


xoxo123

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Excellent

 

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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.

For a complete list of videos, visit our video library