The number of connections upon the Internet during any two-minute period is given by the following distribution:
Number of Times Proportion
0 0.1
1 0.2
2 0.1
3 0.4
4 0.2
Construct a table using the same headings as the table on the top of page 171 in your text but add the xP(x) column as given in your notes (by hand).
a. Determine the mean number of times a connection is made during a two-minute period (show work by hand).
b. Determine the standard deviation of the number of connections made during a two-minute period (show work by hand).