A statistical analysis of 1,000 long-distance telephone calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed, with μ = 240 seconds and σ = 40 seconds.
What is the probability that a call lasted between 120 and 180 seconds? Answer:
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here