A Researcher Records the Following Number of Birdcalls Made During

Multiple Choice

A researcher records the following number of birdcalls made during an experimental session with robins: 7.2 ± 0.6 (M ± SD) .Assuming these data are normally distributed,what is the probability that robins made more than nine birdcalls during this experimental session?

A) .9987
B) .4987
C) .0013
D) The probability is not listed in the unit normal table.