Confidence interval estimate of average number of days

Reference no: EM13118590

The labor relations manager of a large corporation wished to study the absenteeism among workers at the company's central office during the last year. a random sample of 25 workers revealed the following: an average of 9.7 days; a standard deviation of 4.0 days; and 12 employees were absent more than 10 days. In estimating a 95% confidence interval estimate of the average number of days absent for the company's workers last year should you use a z or t value in the formula?

Reference no: EM13118590

Questions Cloud

What causes ph to increase or decrease : What causes pH to increase or decrease with E. coli cells when they are in a sample of pond water and they are either left in the dark or in the light for a week undisturbed?

Find out the speed of the athlete when she is halfway : Find out the maximum height reached by the athlete relative to the trampoline also f ind out the speed of the athlete when she is halfway up to her maximum height

Find probability that the result spells new york : The same experiment as in part (a) above is done with the 7 letters from CHICAGO. Find the probability that the result spells CHICAGO. Find probability that the result spells NEW YORK

For which case do you expect a stable polymorphism : For which case do you expect a stable polymorphism at equilibrium?

Confidence interval estimate of average number of days : In estimating a 95% confidence interval estimate of the average number of days absent for the company's workers last year should you use a z or t value in the formula?

Illustrate what average power must the winch supply : Illustrate what average power must the winch supply in order to accelerate a 174-kg ultra-light glider from rest to 23.0 m/s over a horizontal distance of 50.0 m? Assume that friction and air resistance are negligible, and that the tension in the ..

What is the name of the process in bacteria : What is the name of the process in bacteria that involves DNA transfer through a cytoplasmic connection known as a pilus?

Find probability that a player''s pick wins the grand prize : Probability that a player's pick wins the grand prize. In a certain lottery, k balls are chosen at random and without replacement from a bin containing N balls numbered 1 through N

What is the partial pressure of oxygen : A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.

User Account

All Pages