A company advertises that food preparation time can be significantly reduced with the Handy Dandy Slicer. A sample of 12 individuals prepared the ingredients for a meal with and without the slicer. You are given the preparation times (in minutes) below.
Person
Preparation Times
With Slicer
Without Slicer
1
20
22
2
12
18
3
20
18
4
14
22
5
19
19
6
20
21
7
19
18
8
15
12
9
22
18
10
19
25
11
21
26
12
23
20
?
At ? = .05, the null hypothesis should
A. be rejected.
B. not be rejected.
C. be revised.
D. not be tested.
Answer: B
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