12.85 10.28 15.42 13.36 15.42 20.56 16.28 25.7 15.42 9.25 9.25 8.22 10.28 11.31 14.91 16.45 13.36 15.42 13.36 12.85 10.6 13.5 20.3 18.7 19.4 25 readings were collected as shown in Table 1 and the sample mean wind speed was found to be 14.498m/s with a sample standard deviation 4.15275m/s and sample variance 17.245m/s. Calculate the test value for this research.

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ISBN:9781119256830
Author:Amos Gilat
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Question

Based on the image attached, it shows monthly wind speed data (measured in m/s) was obtained. The researcher claimed that the average wind speed distribution is less than 12m/s.

Table 1
12.85
10.28
15.42
13.36
15.42
20.56
16.28
25.7
15.42
9.25
9.25
8.22
10.28
11.31
14.91
16.45
13.36
15.42
13.36
12.85
10.6
13.5
20.3
18.7
19.4
25 readings were collected as shown in Table 1 and the sample mean wind speed was found to be 14.498m/s with a sample standard deviation
4.15275m/s and sample variance 17.245m/s.
Calculate the test value for this research.
Transcribed Image Text:Table 1 12.85 10.28 15.42 13.36 15.42 20.56 16.28 25.7 15.42 9.25 9.25 8.22 10.28 11.31 14.91 16.45 13.36 15.42 13.36 12.85 10.6 13.5 20.3 18.7 19.4 25 readings were collected as shown in Table 1 and the sample mean wind speed was found to be 14.498m/s with a sample standard deviation 4.15275m/s and sample variance 17.245m/s. Calculate the test value for this research.
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