Choco- Chippy Cookie Company has two different manufacturing plants. Company officials want to test whether each plant fills the bags with the same number of ounces. A random sample of cookie bags from plant A had a mean of 24.2 ounces in each bag. A random sample from plant B had a mean of 22.2 ounces. They randomized the data over 100 trials, and the difference of means for each trial is shown in the dot plot below. What can Choco-Chippy Cookie Company conclude from this study?

a dot plot with the values of negative 2.5, negative 2.0, negative 1.5, negative 1.0, negative 0.5, 0.0, 0.5, 1, 1

Question

Choco- Chippy Cookie Company has two different manufacturing plants. Company officials want to test whether each plant fills the bags with the same number of ounces. A random sample of cookie bags from plant A had a mean of 24.2 ounces in each bag. A random sample from plant B had a mean of 22.2 ounces. They randomized the data over 100 trials, and the difference of means for each trial is shown in the dot plot below. What can Choco-Chippy Cookie Company conclude from this study?

a dot plot with the values of negative 2.5, negative 2.0, negative 1.5, negative 1.0, negative 0.5, 0.0, 0.5, 1, 1

Ultrilliam · Answer

http://assets.openstudy.com/updates/attachments/5373b0f8e4b0c1175e75baa3-summerns-1400091006581-09_00_g29_q01.jpg is this the dot plot?

macgirl234 · Answer

yep!

macgirl234 · Answer

Here are the answer options:
The difference is significant because a difference of 2.0 is very likely.
 The difference is significant because a difference of 2.0 is not very likely.
 The difference is not significant because a difference of 2.0 is very likely.
 The difference is not significant because a difference of 2.0 is not very likely.

Ultrilliam · Answer

This question was asked before, but never answered it seems... hmmm

Ultrilliam · Answer

Lemme get someone who can answer it ^_^

JustSaiyan · Answer

@MARC

JustSaiyan · Answer

Let me see if he is on PA and if he is I will get him to log on.

JustSaiyan · Answer

Not currently online. But I will send him the link here, and he should answer before the day is over.

Falconmaster · Answer

HIP HOP DONT STOP FLIP FLOP

JustSaiyan · Answer

@EvL

Ultrilliam · Answer

@EvL ( ͡° ͜ʖ ͡°)

JustSaiyan · Answer

Lenny. :P

undeadknight26 · Answer

It has to be either B or D, please hold as I find the best of the options.

undeadknight26 · Answer

I'd go with D but still not 100% sure :)

macgirl234 · Answer

Should I choose D, then? I know you're not sure but I'd like to be as close to positive as possible

Ultrilliam · Answer

usually hes somewhat reliable, from what I can gather his answer is D :P

Ultrilliam · Answer

(he logged off so I answered for him ¯\_(ツ)_/¯)

macgirl234 · Answer

Okay. Thank you!

undeadknight26 · Answer

As stated I'm around 85% sure it would be D.  The difference would only be significant if 2.0 was likely.

undeadknight26 · Answer

At least that's what I understand from my research.