EQT 272 PPUUAU believes there is a of sales. To The X 3. Mr Rama, president of D

Question

EQT 272 PPUUAU believes there is a of sales. To The X 3. Mr Rama, president of Dan Din Dun Financial Services, e relationship between the number of client contacts and the dollar amount document this assertion, Mr Rama gathered the following sample information. indicates the number of client contacts last month, and the Y shows the value of sales (RM thousands) last month for each client sampled. Number of Contacts, X 14 12 20 16 46 23 48 50 Sales (RM thousands), Y 24 14 28 30 80 30 90 85 120 110 50 (a) Test whether there is relationship between both variables. Use -005. (b) Compute the coefficient of correlation and explain. (c) Determine the regression equation. (d) Determine the value of sales if number of contacts is 25. ind out whether worker hours are relate

Explanation / Answer

Model Summary

S R-sq R-sq(adj) R-sq(pred)
9.31045 95.13% 94.52% 92.31%

Coefficients

Term Coef SE Coef T-Value P-Value VIF
Constant -12.20 6.56 -1.86 0.100
XX 2.195 0.176 12.51 0.000 1.00

a] pvalue (beta) = 0.000 < alpha = 0.05

Reject Ho. there is linear relationship between both variables.

b] coefficient of correlation = sqrt(R^2) = sqrt(0.9513)

  coefficient of correlation = 0.9753 = 97.53%

c]  Regression Equation

YY = -12.20 + 2.195 XX

d] Regression Equation

YY = -12.20 + 2.195 *25

YY = 42.675

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