A forester is studying the average basal area of a particularspecies of pine tree in the Pisgah National Forest. She wants toknow if the mean basal area has increased since 1950 when the meanbasal area was 55 f t2 . She collects data on n=75 randomlyselected pine trees and finds a sample mean of 58.4 f t2 andstandard deviation of 7.3 f t2 . She sets her significance level atα = 0.01. Conduct a hypothesis test to help the forester answer herquestion if basal area is known to be normallydistributed.