Are random arrivals at a shoe store at the local mall Poisson distributed? Suppose a mall employee researches this question by gathering data for arrivals during one-minute intervals on a weekday between 6:30 P.M. and 8:00 P.M. The data obtained follow. Use α = .05 to determine whether the observed data seem to be from a Poisson distribution.
Arrivals per Minute .. Observed Frequency
0 ........... 26
1 ........... 40
2 .......... 57
3 ........... 32
4 ........... 17
5 ........... 12
6 ........... 8