9.26 For the data 1.01, 0.99, 1.12, 1.27, 0.82, 1.04, calculate the standard deviation under the conditions in parts

(a) and (b). Then, complete parts

(c) and (d). (Note: You will have to carry some calculations out to the third decimal place to see the difference in calculations.)

a. For the sample

b. As an estimate of the population

c. Calculate the standard error for t using symbolic notation.

d. Calculate the t statistic, assuming μ = 0.96.