
basic stats 3
1. The # of tow calls coming into an tow truck station on Tuesday (between 7:00  8:00 AM) has a probability dist. With a mean of four.
i) State what type of prob. Dist. would be appropriate for this.
ii) Find the prob. of not getting any emergency tow calls between 78 a.m.
iii) Find the prob. of receiving 5 emergency tow calls between 78 a.m.
iv) List what is the # of emergency tow calls expected to be received.
v) List what is the std. dev. of emergency tow calls received.

Just a bunch of questions. At this level of stats  theres only one distribution that has as its parameter the mean of a population. Knowing which distribution that is should help you do the rest of the problems.

So is this Poisson then?
Next queston is:
I was gone for an entire week and missed how to do these problems.
I have a TI89 calculator (titanium model). How do you set up the first problem?
Example:
For the first one I coem up with u=4;P(x<=0)= ... but not sure how to enter this in my calc.
Please advise.
Thanks!