GIVE TYPED WRITING SO I CAN UNDERSTAND CLEARLY.

Kindly give correct answers and step by step working.do not skip steps.Mention clearly about the formula and the conversion.be very clear.do not skip steps.be very clear.NUMBER THE ABS CLEARLY

STA JUNE2019

QUESTION 4 a) One end, A of an elastic string was attached to a horizontal bar and a mass, m grams was attached to the other end, B. The mass was suspended freely and allowed to settle vertically below A. The MINITAB output on mass (in gram) and length (in mm) is shown below. Regression Analysis: length versus mass Predictor Coof BE Cool Constant 210. 600 4.067 51.78 0.000 masa 0. 15257 0. 01044 14.61 0. 000 5 - 4. 36872 1-3q - 98.28 R-Sq(adi) = 97.7% D) Identify the independent and dependent variables. State the coefficient of determination. Interpret the value. iii) Write the estimated regression equation. iv) Interpret the gradient and the intercept of the regression equation line. ) Estimate the length of the string when a mass of 360 grams is attached at B. (10 marks) b) The table below shows the age of buyer and the total amount of natural health food purchased (in RM): Age 43 65 29 77 54 80 73 68 38 Total 120 18 34 25 54 71 58 12 amount Construct a scatter plot for the above data. Calculate the Pearson product moment correlation coefficient and interpret its meaning. (7 marks)