A researcher wants to examine the relationship between the annual electricity costs ($000) per house , the number of solar panels on a house and the number people per house.EXCEL was used to create the following multiple linear regression output.

A)Write down the 95% confidence interval to estimate the population coefficient of People per house.Do NOT interpret.

B)Test for a positive linear relationship between annual electricity cost and people per house, giving hypotheses and using a 1% level of significance.

Regression Statistics Multiple R 0.97 R Square 0.94 Adjusted R Square 0.93 Observations 10 Standard Coefficients t Stat P-value Lower 95% Upper 95% Error Intercept 1.22 0.175 7.03 0.00 0.81 1.63 Age -0.15 0.02 -10.27 0.00 -0.19 -0.12 People per house 0.07 0.03 2.63 0.03 0.01 0.14