The number of incoming phone calls at a company switchboard during 1-minute intervals is believed to have a Poisson distribution. Use α = .10 and the following data to test the assumption that the incoming phone calls follow a Poisson distribution.
Number of Incoming
Phone Calls During
a 1-Minute Interval ____________________________ Observed Frequency
0 .......................................................... 19
1 .......................................................... 22
2 .......................................................... 25
3 .......................................................... 17
4 .......................................................... 10
5 .......................................................... 5
6 .......................................................... 2
Total ...................................................... 100
Compute the value of the test statistic (to 2 decimals).
Compute the p-value