The number of calls arriving at a switchboard from noon to 1 p. m. during the business days monday through friday is monitored for six weeks (i. e. 30 days). let x be defined as the number of calls during that one-hour period. the relative frequency of calls was recorded and reported as: values 5 6 8 9 10 11 12 13 14 15 rel. freq. 0.067 0.067 0.100 0.133 0.200 0.133 0.133 0.067 0.033 0.067 does the assumption of a poisson distribution seem appropriate as a probability model for these data? perform a goodness-of-fit procedure with α=0.05. note: combine cells to the following categories: 7 or less, 8, 9, 10, 11, 12 or more.