The results. in quot;16 following table: Hauling lll Wlmut III}. HI-nn Bill IW'l'lil Pllllua Hal-r I turn Pllllua lull-r I turn quot;1_ quot;$ ma...

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)