The number of defective items produced on an assembly line during an hour is counted for a random sample of 20 hours. The results are as follws:21 16 10 10 11 9 13 12 11 2910 14 27 10 11 11 12 19 11 9Construct a stem-and -leaf plot for this sample. Is it reasonable the sample as coming from an approxiamately normal population? Expalin.

Question
Asked Sep 23, 2019
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The number of defective items produced on an assembly line during an hour is counted for a random sample of 20 hours. The results are as follws:

21 16 10 10 11 9 13 12 11 29

10 14 27 10 11 11 12 19 11 9

Construct a stem-and -leaf plot for this sample. Is it reasonable the sample as coming from an approxiamately normal population? Expalin.

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Expert Answer

Step 1

Construct the stem and leaf plot for the dataset.

For the given data, Stem and leaf plot using MINITAB software is given below.

Software procedure:

Step-by-step procedure to obtain Stem and leaf plot is given below.

  • Open MINITAB and enter the given data with the name of the variable Hours.
  • Go to Graphs, select stem and leaf.
  • Select the variable
  • Click

Outpu...

Stem-and-Leaf Display: Hours
= 20
Stem-and-leaf of Hours
Leaf Unit = 1.0
99
2
0
000011111
(9)
1
223
6
1
4
5
1
6
4
1
3
2
1
2
2
2
2
7
1
2
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Stem-and-Leaf Display: Hours = 20 Stem-and-leaf of Hours Leaf Unit = 1.0 99 2 0 000011111 (9) 1 223 6 1 4 5 1 6 4 1 3 2 1 2 2 2 2 7 1 2

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