a. Under the same conditions as those leading to the interval (7.5), P[(x = )/(/n) < 1.645]

a. Under the same conditions as those leading to the interval (7.5), P[(x̅ = µ)/(σ/√n) < 1.645] = .95.
Use this to derive a one-sided interval for m that has infinite width and provides a lower confidence bound on µ. What is this interval for the data in Exercise 5(a)?
b. Generalize the result of part (a) to obtain a lower bound with confidence level 100(1 - α)%.
c. What is an analogous interval to that of part (b) that provides an upper bound on µ? Compute this 99% interval for the data of Exercise 4(a).