In: Statistics and Probability
Your math professor receives several student emails each day.
The probability model shows the number of...
Your math professor receives several student emails each day.
The probability model shows the number of emails your professor
receives from students in a given day. Feel free to use StatCrunch
or other technology to find your solutions. Enter only the
solutions into the spaces provided.
# student emails |
0 |
1 |
2 |
3 |
4 |
5 |
Probability |
0.30 |
0.20 |
0.10 |
0.05 |
0.05 |
0.30 |
- How many emails should your professor expect to receive daily?
Round your result to the nearest hundredth.
- What is the standard deviation of the number of emails your
professor should expect to receive? Round to the nearest
hundredth.
- If it takes your professor an average of 5 minutes to reply to
each email s/he receives, how many should your professor expect to
spend responding to student emails in a given day?
- If your English professor receives the same mean and standard
deviation number of emails, what is the mean and standard deviation
of thedifference in the number of emails your
professors receive?
Mean:
Standard Deviation: