The Following Statements Were Printed in Journal Articles in the Field

Essay

The following statements were printed in journal articles in the field of psychology. Explain what each statement means to a person who is unfamiliar with the concept of confidence intervals:
a. "The average grade point average of a Greenwald State College Student is 2.9 ±.3 (95% CI)."
b. "The average number of overtime hours worked in the plumbing industry is 3.7 with a 99% confidence interval of 2.5-4.9."
c. "Each 1 hour per day of brisk walking is associated with a 24% (95% CI, 19-29%)reduction in obesity."