For a family, the length of voicemails (v) is normally
distributed with a mean of 40 seconds and standard
deviation of 10 seconds. Find the probability that a
given voicemail is between 10 and 40 seconds.
99.7%-
-95%-
-68%-
10 20 30 40 50 60 70
P(10 Be sure to use the 68%-95% -99.7% rule and do not round.
Enter