Question

Eric surveyed three different restaurants about the amount of time they spend, in hours, on washing dishes in a week. He found the mean and the standard deviation, SD, of the data, as shown below.

Restaurant A Restaurant B Restaurant C
Mean = 46.7
SD = 5.1 Mean = 51.4
SD = 6.2 Mean = 49.5
SD = 4.5
Which of the statements is true?
A.
Restaurant C spends more time on washing dishes than restaurant A and restaurant B because it has the highest mean.
B.
Restaurant A spends less time on washing dishes than restaurant B and restaurant C because it has the lowest mean.
C.
Restaurant B spends more time on washing dishes than restaurant A and restaurant C because it has the highest standard deviation.
D.
Restaurant C spends less time on washing dishes than restaurant A and restaurant B because it has the lowest standard deviation.

Answer 1

B.

Restaurant A spends less time on washing dishes than restaurant B and restaurant C because it has the lowest mean.