A company offered one half of its employees a bonus if the production of light bulbs increased by 30%. The other half of the employees was not offered a bonus. As the end of the month, production in the group that did not get the bonus offer increased by a mean of 20 and production in the bonus group increased by a mean of 30.
What is the correct order of steps to determine if the results are significant?
A: Run the experiment many times.
B: Randomly separate the employees’ individual results into two groups.
C: Calculate the probability of a difference of 10.
D: Calculate the difference of the means.
E: Calculate the mean of each group.
CHOICES
a.) A, B, C, D, E
b.) A, B, C, E, D
c.) B, E, D, C, A
d.) B, E, D, A, C