confidence level

Calculate the sample size using a 95% confidence level, and a 5% margin of error. Place the calculation in the Appendix.

 

Discuss how validity (and reliability) will be achieved.

 

C’s Burgers, Fires & Shakes is looking to test their hypothesis that there is a correlation between employee productivity and increased sales.  Hypothesis 1 states that there is no difference in sales based on the productivity of each shift.  While Hypothesis 2 looks to prove that there is a difference in sales based on the productivity of each shift.  The variable are the production of the workers on each shift reflected by hours worked (IV) and the amount of increased sales (DV).  The population is the entire pool of 400 employees of all the C’s Burgers, Fries, and Shakes locations.  It will be time consuming to test the whole of the population so a sample of five random employees will be taken from 40 random stores for a total sample population of 200.

 

The target population at C’s Burgers, Fries, and Shakes would be a random sample of five total employees aged (21 – 65) at a random store location.  There will be 40 store locations selected with ten stores from the east, west, south and north regions of the nation.  Managers, shift supervisors, and new hires will be excluded.  The reasoning in selecting this target population is to observe and track the productivity of the average C’s Burgers, Fries, and Shakes employee.  Including managers, shift supervisors, and new hires in the population will probably cause a confounding effect due to their more than average and less than average productivity.