\\\\table[[Grade X,Grade Y],[

564571576,583586

,

574575,576,578,579

,]]\ a. For each of the two grades of tires, compute the mean, median, and standard deviation.\ The mean for Grade

x

is

mm

.\ (Type an integer or a decimal.)\ The mean for Grade

Y

is

mm

.\ (Type an integer or a decimal.)\ The median for Grade

x

is

mm

.\ (Type an integer or a decimal.)\ The median for Grade

Y

is

mm

.\ (Type an integer or a decimal.)\ The standard deviation for Grade

x

is

mm

.\ (Type an integer or decimal rounded to two decimal places as needed.)\ The standard deviation for Grade

Y

is

mm

.\ (Type an integer or decimal rounded to two decimal places as needed.)\ b. Which grade of tire is providing better quality? Explain. Choose the correct answer below.\ A. Grade Y provides better quality because its mean is much smaller.\ B. Grade

Y

provides the better quality. While the mean of Grade

x

is closer to the expected mean, the standard deviation of Grade

Y

is much smaller.\ C. Grade X provides better quality because its mean is much smaller.\ D. Grade X provides the better quality. While the mean of Grade

Y

is closer to the expected mean, the standard deviation of Grade

x

is much smaller.