Final answer:
The proportion of blue M&M's is 0.195 when the number of blue M&M's (72) is divided by the total number of M&M's (370) and the result is rounded to three decimal places.
Step-by-step explanation:
To find the proportion of blue M&M's among the total, you would divide the number of blue M&M's by the total number of M&M's. Here we have 72 blue M&M's out of 370 total M&M's.
The calculation for the proportion would be:
Proportion of blue M&M's = Number of blue M&M's / Total number of M&M's
= 72 / 370
= 0.1946 when rounded to four decimal places.
However, since you asked for the answer to be rounded to three decimal places, the proportion of blue M&M's would be 0.195.