Recent research suggests that Americans make an average of 10 phone calls per day (CNN, August 26,
Question:
Recent research suggests that Americans make an average of 10 phone calls per day (CNN, August 26, 2010). Let the number of calls be normally distributed with a standard deviation of 3 calls.
a. What is the probability that an average American makes between 4 and 12 calls per day?
b. What is the probability that an average American makes more than 6 calls per day?
c. What is the probability that an average American makes more than 16 calls per day? LO5
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Related Book For
Business Statistics Communicating With Numbers
ISBN: 9780071317610
1st Edition
Authors: Kelly Jaggia
Question Posted: