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Volgvan
2 years ago
12

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)The difference is significant because a difference of 2.0 is very likely.
B)The difference is significant because a difference of 2.0 is not very likely.
C)The difference is not significant because a difference of 2.0 is very likely.
D)The difference is not significant because a difference of 2.0 is not very likely.

Mathematics
2 answers:
MrRissso [65]2 years ago
8 0

Answer:

The correct answer is D

Step-by-step explanation:

The difference is not significant because a difference of 2.0 is not very likely.

If we see the dot plot shown, we can see that the variation is not likely to be 2.0 because at most dots points the difference is not close to 2. Its either 3,4 or 1. The difference would only be significant if 2.0 was likely. Hence, option D is correct.

                                                                                         

garik1379 [7]2 years ago
4 0

Answer:

The correct answer is D

Step-by-step explanation:

As it can be clearly visualized from the graph that the variation is not likely to be 2.0 as at most of the points the difference is not close to 2.0

Hence, The difference is not significant because a difference of 2.0 is not very likely.


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3 years ago
1. (10pts] Let A = {1, 2, 3, 4, 5}, let B = {1,4,5,7,8,9}, and let C = {2, 4, 6, 7,9}. Determine each of the following (a) An Bn
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Answer and explanation:

Given : Let A = {1, 2, 3, 4, 5}, let B = {1,4,5,7,8,9}, and let C = {2, 4, 6, 7,9}.

To find : Determine each of the following,

a) (A\cap B)\cap C

b) (A\cup B)\cap (A\cup C)

c) A - (B\cup C)

d) (A-C) (C-A)

Solution :

The union of two sets is a new set that contains all of the elements that are in at least one of the two sets.

The intersection of two sets is a new set that contains all of the elements that are in both sets.

a) (A\cap B)\cap C

A\cap B=\{1,4,5\}

Then, (A\cap B)\cap C=\{4\}

b) (A\cup B)\cap (A\cup C)

A\cup B=\{1,2,3,4,5,7,8,9\}

A\cup C=\{1,2,3,4,5,7,9\}

(A\cup B)\cap (A\cup C)=\{1,2,3,4,5,7,9\}

c) A - (B\cup C)

B\cup C=\{1,2,4,5,6,7,8,9\}

A - (B\cup C)=\{3\}

d) (A-C) (C-A)

A-C=\{1,3,5\}

C-A=\{6,7,9\}

(A-C) (C-A)=\{1,3,5\}\times\{6,7,9\}

(A-C) (C-A)=\{(1,6),(1,7),(1,9),(3,6),(3,7),(3,9),(5,6),(5,7),(5,9)\}

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