Consider a sample with a mean of40 and a standard deviation of4. Use Chebyshev's theorem to determine the percentage of the data within each of the following ranges (to the nearest whole number).

a.30 to50, at least_______%

b.15 to65, at least_______%

c.32 to 48, at least_______%

d.28 to 52, at least_______%

e.22 to 58, at least_______%