SOLUTION: 11.23 Mean output of solar cells of three types are measured six times under random light intensity over a period of 5 minutes, yielding the results shown. Research question: Is th

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Question 131651: 11.23 Mean output of solar cells of three types are measured six times under random light intensity over a period of 5 minutes, yielding the results shown. Research question: Is the mean solar cell output the same for all cell types?
SolarWatts
Solar Cell Output (watts)
Cell Type Output (watts)
A 123 121 123 124 125 127
B 125 122 122 121 122 126
C 126 128 125 129 131 128
Answer by stanbon(75887) About Me  (Show Source):
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Mean output of solar cells of three types are measured six times under random light intensity over a period of 5 minutes, yielding the results shown. Research question: Is the mean solar cell output the same for all cell types?
SolarWatts
Solar Cell Output (watts)
Cell Type Output (watts)
A 123 121 123 124 125 127
B 125 122 122 121 122 126
C 126 128 125 129 131 128
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Ho: the means are the same
Ha: at least one of the means is different
I ran an ANOVA Test on the data and found
Test statistic: F = 9.43717...
p-value = 0.0022215...
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Conclusion: Since p-value is far less than a significance
figure of 5% or of 1%, Reject Ho.
At least one of the means is different.
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Cheers,
Stan H.