Question

A company offered one half of its employees a bonus if the production of light bulbs increased by 20%. 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 15 and production in the bonus group increased by a mean of 10.

What is the correct order of steps to determine if the results are significant?

Answer 1

A: Randomly separate the employees’ individual results into two groups.


B: Calculate the mean of each group.


C: Calculate the difference of the means.


D: Run the experiment many times.


E: Calculate the probability of a difference of 5.

Answer 2

@welshfella

Answer 3

I'm pretty sure D would be last. Repetition is usually the last step in any sort of experiment.

Answer 4

Honestly, ABCD sounds right to me... but not sure

Answer 5

I was thinking ABCED

Answer 6

The experiment is done already. Forget "A".

The mean increases are already calculated. Forget "B".

Okay, we could do that. 10 - 15 = -5. That's done. Don't pick "C".

Running this experiment multiple times is too expensive. We need results in time to make a difference in production for the next light bulb season. I would avoid "D".

You WILL need a P-Value.

Answer 7

Talk it out. Think about it. Have a conversation with the facts that are in your head.

Answer 8

So would ABCED be the correct order of steps?

Answer 9

wait thats not even an option

Answer 10

If you do "D" AT ALL, then "C" and "E" are inconsistent.

Why in the name of reason would you calculate a P(Difference of 5) if the difference you calculated in "C" was something other than 5?!

Answer 11

:/

Answer 12

a.) A, B, C, D, E
b.) D, E, A, B, C
c.) C, E, A, B, D
d.) A, B, D, C, E

Answer 13

its not asking me to cancel any steps out, just put it in order

Answer 14

Fundamentally, it is a poorly-written question. "D" just doesn't fit in with the other four.

"D" CONTAINS the other four steps. If I HAD to pick one, I would pick "D" first.

Run the following experiment multiple times:
---- Divide up the employees.
---- Calculate the means.
---- Calculate the difference of means.
---- Calculate the probability of a difference that big.

Answer 15

okay, I will let you know the correct answer at the end of the test

Answer 16

The one with D first is not the answer. Doesn't tell me which is right.

Answer 17

Shampoo may have the answer: Lather, Rinse, Repeat.

Maybe "D" should be last.