BA 240 Common Final-Chow Dec 2017 The career center at a local college their col
ID: 3366517 • Letter: B
Question
BA 240 Common Final-Chow Dec 2017 The career center at a local college their college majors and their job salaries one year after graduation. 430 people were selected to answer the survey. The college majors in the study are the following: Literature, Computer Science, Business Administration, Biology, Art History Psychology and Music. The survey than $40,000), Average (540,000 to $60,000) or High (greater than $60,000) Problem 6: is conducting a survey of its recent graduates regarding Mathematics respondents select whether their salaries are Low (les a) Wha t is the appropriate method of analysis for this problem relating job salary one year after graduation and major? (4 pts) b) State the null hypothesis and alternative hypothesis in terms of the problem. (2 pts) c) What are the degrees of freedom? Assume a .05. What is the critical value? (3 d) Given the value of the test statistic is 25.28, what do you conclude (in terms of th problem) and why? (4 pts)Explanation / Answer
a) Chi-square test for independent of attributes
b) Ho: There is no signoficant association between job salary after one year graduation and major ( job salary after one year graduation and major are independent) against
H1: There is a significant association between job salary after one year graduation and major ( job salary after one year graduation and major are dependent)
c) Degrees of freedom = (r-1)(s-1) = (8-1)(3-1) = 14
Number of rows (r) = 8
Number of columns (s) = 3
d) At alpha = 0.05 level with 14 degrees of freedom the chi-square critical value = 23.685
e) Here test statistic = 25.28
Therefore chi-square test statistic > chi-square critical value (25.28 > 23.685)
Hence we reject Ho.
Conclusion: There was an enough evidence that the job salary after one year graduation and major were significantly related (dependent)
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