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# Solar Panel Instillation Essay

692 words - 3 pages

Solar Panel Instillation (I3)
Sarah Martin
RES 342
September 29, 2010
Stephen Loro

Solar Panel Instillation (I3)
Background:
You are the owner and CEO of Martin Solar. Your company installs solar panel systems on residential and business structures. Your competitor is Solar Power. For some reason they are receiving more business than you are. You want to come up with ways to increase your profits without raising your prices.
Research Problem:
Martin Solar is losing profits to Solar Power when installing kilowatt systems on residential and business structures.
Research Question:
Is there a difference between Martin Solar and Solar Power as measured by kilowatt instillation?
...view middle of the document...

76 | 5.67 |
minimum | 3 | 3 |
maximum | 20 | 20 |
range | 17 | 17 |
| | |
standard error of the mean | 1.12 | 1.34 |
| | |
confidence interval 95.% lower | 8.91 | 9.01 |
confidence interval 95.% upper | 13.65 | 14.65 |
half-width | 2.37 | 2.82 |
| | |
skewness | 0.12 | -0.06 |
kurtosis | -0.42 | -1.23 |
coefficient of variation (CV) | 42.23% | 47.91% |
| | |
normal curve GOF | | |
p-value | .6412 | .2787 |
chi-square(df=2) | 0.89 | 2.56 |
E | 3.60 | 3.60 |
O(-0.84) | 4 | 5 |
O(-0.25) | 3 | 2 |
O(+0.25) | 5 | 4 |
O(+0.84) | 3 | 2 |
O(inf.) | 3 | 5 |

The mean kilowatt instillation of Martin Solar is 11.28 and the mean kilowatt instillation of Solar Power is 11.83. The Goodness of Fit test revealed that the data was normal. The researchers retained the null hypothesis because the p-value indicated a normal distribution.

Runs Plot:

Hypothesis Test – Independent Groups (Z-test)
| | | |
| Martin Solar | Solar Power | |
| 11.28 | 11.83 | mean |
| 4.76 | 5.67 | std. dev. |
| 18 | 18 | n |
| | | |
| | -0.556 | difference (Martin Solar - Solar Power) |
| | 1.745 | standard error of difference |
| | 0 | hypothesized...

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