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4. A company wants to investigate the relationship between length of employment, ) of their sales people and the number of electronic laboratory scales sold, (). The following regression equation is obtained: = 112.2 + 2.38x We want use the t test to test the following hypotheses (a-0.05) H,:A=0 so, = 0.35 a. Find the critical value from the t-tables. b. Calculate the value of the t-statistic. c. Is there any significant relationship between length of employment and the numberof scales sold? Use the results from parts (a) and (b)
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