Are any of estimated coefficients not statistically differen

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The Klein Corporation's marketing department, using regression analysis, estimates
the firm's demand function, the result being
Q = -104 - 2.1P + 3.2I + 1.5A + 1.6Z
R2 = 0.89
Sample = 200 observations
where Q is the quantity demanded, P is the price, I is disposable income, A is advertising expenditure and Z is the price of a competing product.

Are any of the estimated coefficients not statistically different from zero at the 95% level of confidence? If so which ones?

Reference no: EM13203885

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