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Mo. Heating Bill With Passive Solar System ($
(a) Perform the appropriate hypothesistest to determine if the use of the passive solar heating device can be attributed to lower monthly heating expenses 
Assume a significance level of 2%.
(b)Assume that the solar heating equipment costs $3,000 to buy and install. Using the appropriate98% confidence interval, calculate how many years it will take you to “break even” if you make this investment (ignore the Time Value Of Money)
 
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