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GIVE TYPED WRITING SO I CAN UNDERSTAND CLEARLY. IF YOU CANNOT TYPE,PLEASE PROVIDE NEAT AND CLEAR HANDWRITING.DO NOT GIVE BLUR AND CLUMSY WRITING.IT IS HARD

GIVE TYPED WRITING SO I CAN UNDERSTAND CLEARLY.

IF YOU CANNOT TYPE,PLEASE PROVIDE NEAT AND CLEAR HANDWRITING.DO NOT GIVE BLUR AND CLUMSY WRITING.IT IS HARD FOR ME TO UNDERSTAND.

Kindly give accurate and correct answers.Kindly give step by step working.Do not skip steps. Mention and be very clear about the formula and conversion

.Then,explain to support and prove the working and answers.I do not really understand.I hope you can help me to understand.Explain how you get the answers and about each working.

STA JANUARY 2018

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QUESTION 3 a) The following are the MINITAB results on CGPA and starting salaries (in RM'00) of seven graduates. Regression Analysis: Salary versus CGPA Predictor Coef SE Cool Constant 7. 712 3.001 2. 57 0.050 CGPA 5.5429 0. 9941 5. 58 0.003 S = 1. 82349 R-Sq - 86. 14 R-Sq(adj) - 83.4. Based on the output, answer the following questions. Identify the independent and dependent variable. (2 marks) Explain the value of the correlation of determination. (2 marks) State the estimated regression line. (2 marks) iv) Interpret the value of the slope of the regression line obtained in (lil). (1 mark) v) Estimate the salary obtained when the CGPA is 3. 15. (2 marks) b ) The following table shows the data on the experience (in years) and monthly salaries (RM '00) of 9 secretaries selected randomly. Experience 14 3 5 6 4 9 18 5 16 Salary 22 12 15 17 15 19 24 13 27 Plot the scatter diagram for the given data. (3 marks) ") Compute the Pearson product moment correlation coefficient. (5 marks) ill) Explain the meaning of the value obtained in (il). (1 mark)b) A continuous random variable X has the following probability density function, f(x). f ( x ) = (1-x)(x -3) ; 1sx53 4 O : otherwise 1) Compute P(2 s X s 3) (3 marks) Find the expected value of X, E(X) (3 marks) Find the variance of x, V(X) (4 marks)

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