Use the information and table below to answer the question:

Over the last months years since Fred has been using the Little Dog mower, he has been carefully noting how long it takes him to mow the yard. He collected the following data:

Question: Based on this data, which of the following is true:

		It takes Fred an average of about 41 minutes to mow the yard
		99.7% of the time, Fred can mow the yard in 41 minutes, +/- 2 seconds (0.684/hour x 60 min/hr = 41.04. And, .04 of a minute is about 2 seconds).
		68% of the time, Fred can mow the yard in 68 minutes +/- 48 seconds.
		It takes Fred an average of about 68 minutes to mow the yard

Date Mowing Trimming 1 3/20/2016 0.75 0.33 2 3/28/2016 0.77 3 4/5/2016 0.75 0.3 44/11/2016 0.69 54/16/2016 0.72 0.25 64/22/2016 0.7 7|4/30/2016 0.69 0.29 8 5/5/2016 0.65 0.25 95/10/2016 0.7 0.21 10 5/15/2016 0.71 11 5/21/2016 0.68 0.3 12 5/25/2016 0.67 13 6/1/2016 0.68 0.29 14 6/5/2016 0.65 0.33 156/10/2016 0.66 16 6/14/2016 0.59 0.34 17 6/20/2016 0.6 18 6/25/2016 0.65 0.27 SUM 12.31 3.16 AVERAGE 0.684 0.287 StdDev 0.048 0.040