Question

QUESTION 2 Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample information. n = 10 n = 10 $\sum_{i=1}^{} x_i = 334$ & $\sum_{i=1}^{} y_i = 615$ & $S_{xx} = 2814.4$ & $S_{yy} = 14454.5$ & $S_{xy} = 6243$ & $SSE = 606.06$ a) Determine the regression equation. $\hat{\beta}_1 = -12.58904$ & $\hat{\beta}_0 = 76.1403$ b) Can we conclude that number of contacts affect the sales positively? Use the .05 significance level. Since the test statistic 13.52 and the critical value is 1.86 we (reject $H_0$ or don't reject $H_0$) reject $H_0$

          QUESTION 2
Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number
of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following
sample information.
n = 10
n = 10
$\sum_{i=1}^{} x_i = 334$ & $\sum_{i=1}^{} y_i = 615$ & $S_{xx} = 2814.4$ & $S_{yy} = 14454.5$ & $S_{xy} = 6243$ & $SSE = 606.06$
a) Determine the regression equation. $\hat{\beta}_1 = -12.58904$
& $\hat{\beta}_0 = 76.1403$
b) Can we conclude that number of contacts affect the sales positively? Use the .05 significance level.
Since the test statistic 13.52
and the critical value is 1.86
we (reject $H_0$ or don't
reject $H_0$) reject $H_0$

QUESTION 2
Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number
of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following
sample information.
n = 10
n = 10
∑i=1^ xi = 334 ∑i=1^ yi = 615 Sxx = 2814.4 Syy = 14454.5 Sxy = 6243 SSE = 606.06
a) Determine the regression equation. β̂1 = -12.58904
β̂0 = 76.1403
b) Can we conclude that number of contacts affect the sales positively? Use the .05 significance level.
Since the test statistic 13.52
and the critical value is 1.86
we (reject H0 or don't
reject H0) reject H0

Added by Derek R.

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