Consider the data set. 2,6,7,8,9 (a)Find the range. (Enter an exact number.) (b)Use the defining formula to compute the sample standard deviation s ....

• 2, 6, 7, 8, 9

(a) Find the range. (Enter an exact number.)

(b) Use the defining formula to compute the sample standard deviation s. (Enter a number. Round your answer to two decimal places.)

(c) Use the defining formula to compute the population standard deviation σ. (Enter a number. Round your answer to two decimal places.)