# Probability and Statistics

Sep 23rd, 2015
HelloWorld
Category:
Statistics
Price: \$5 USD

Question description

THIS MUST BE FURNISHED WITH AN EXCEL FORMULA ATTACHED.  THANK YOU

Among U.S. cities with a population of more than 250,000 the mean one-way commute time to work is 24.3 minutes. The longest one-way travel time is in New York City, where the mean time is 38.8 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 7.7 minutes.

 a. What percent of the New York City commutes are for less than 27 minutes? (Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places.)
 Percent %
 b. What percent are between 27 and 35 minutes? (Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places.)
 Percent %
 c. What percent are between 27 and 43 minutes? (Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places.)
 Percent %

A study of long-distance phone calls made from General Electric Corporate Headquarters in Fairfield, Connecticut, revealed the length of the calls, in minutes, follows the normal probability distribution. The mean length of time per call was 3.70 minutes and the standard deviation was 0.60 minutes.

 a. What fraction of the calls last between 3.70 and 4.50 minutes? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)
 Fraction of calls
 b. What fraction of the calls last more than 4.50 minutes? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)
 Fraction of calls
 c. What fraction of the calls last between 4.50 and 5.50 minutes? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)
 Fraction of calls
 d. What fraction of the calls last between 3.00 and 5.50 minutes? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)
Fraction of calls

## Tutor Answer

(Top Tutor) Daniel C.
(997)
School: UCLA
PREMIUM TUTOR

Studypool has helped 1,244,100 students

## Review from our student for this Answer

Sigchi4life
Sep 26th, 2015
"Goes above and beyond expectations !"
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1828 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors