Social Security Numbers A group of 70 students were asked to record the last digit o...

Social Security Numbers A group of 70 students were asked to record the last digit of their social security number.

a. Draw a relative frequency histogram using the values 0 through 9 as the class midpoints. What is the shape of the distribution? Based on the shape, what would be your best estimate for the mean of the data set?

b. Use the range approximation to guess the value of s for this set.

c. Use your calculator to find the actual values of ̅x and s. Compare with your estimates in parts a and b.