Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

QUESTION 1 A random sample of monthly internet usage bills from three different telecommunication providers were collected among the university students at College H. The

image text in transcribedimage text in transcribedimage text in transcribed
image text in transcribedimage text in transcribedimage text in transcribed
QUESTION 1 A random sample of monthly internet usage bills from three different telecommunication providers were collected among the university students at College H. The result as follow. ANOVA Internet Usage Sum of Squares df Mean Square F Sig. Between Groups 1613.771 Q R S 069 Within Groups P 12 238.773 Total 4479.042 14 a) What are the TWO (2) main assumptions for the model above? (2 marks) b) Compute the values of P, Q, R and S. (4 marks) c) Using p-value approach, is there any evidence to indicate the mean internet usage bills among the university students are different from the three telecommunication providers? Use a=0.05. (4 marks)QUESTION 2 Hashim Motors Son. Bhd. specializes in selling a secondhand car. Currently, the company has 12 used cars for sale. The owner of the company wants to investigate the relationship between the age of the car and the mileage of the car. The data were collected and analyzed using SPSS. The results as follow. Car's age (years) 6 4 2.5 4 3 5 5.5 4.5 4.5 3.5 Mileage ('000 km) 93 60 33 36 53 59 48 77 79 61 63 50 Model Summary Adjusted R Std. Error of the Model R R Square Square Estimate 975 951 .946 4.036 a. Predictors: (Constant), AgeCoefficients" Standardized Unstandardized Coefficients Coefficients Model B Std. Error Beta Sig. 1 (Constant) 3.927 4.134 .950 365 Age 13.997 1.002 975 13.971 000 a. Dependent Variable: Mileage a) Prove that the correlation coefficient is 0.975. (4 marks) b) Interpret the value of the correlation coefficient in a). (1 mark) c) State the value of the coefficient of determination. Interpret its meaning. (2 marks) d) Based on the SPSS output, write the complete regression equation. (1 mark) e) Based on the regression equation in d), interpret the slope in the context of the problem. (1 mark) f) Predict the mileage of the car if the age of the used car is 4,3 years. (1 mark)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image_2

Step: 3

blur-text-image_3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Differential Equations With Boundary-Value Problems

Authors: Dennis G Zill, Brad Strong, Michael Cullen

7th Edition

1111798524, 9781111798529

More Books

Students also viewed these Mathematics questions

Question

5. How can I help others in the network achieve their goals?

Answered: 1 week ago