1) Consider a sample with data values of27,26,28, 15, 30, 34,25, and26.

a. Compute the interquartile range.

b. Compute the sample variance. (Round your answer to two decimal places).

c. Compute the sample standard deviation. (Round your answer to two decimal places).

2) Consider a sample with a mean of 30 and a standard deviation of 5. Use Chebyshev's theorem to determine the minimum percentage of the data within each of the following ranges. (Round your answers to the nearest integer.)

a. 24to36

b. 17to43