MTH301 Current Spring 2011 Final Term Paper

Total marks = 80
Total questions = 52
Mcqs = 40
12 short questions
4 questions of 2 marks
4 questions of 3 marks
4 questions of 5 marks

most of the mcqs were from past papers.
1: Define alternate hypothesis 2 marks
2: Find Covariance Cov(X,Y) if var(X)=7,var(Y)=6 and correlation
coefficient r between X and Y is 0.3?
3: calculate contribution rate. fixed cost, sale price per unit and variable
cost was given.
4: calculate discounted value
5: what will be y-intercept 'b' in the regression line Y=aX+b if Y = 9, X
= 3 and a = 2?
6: Suppose a coin is flipped 3 times. What is the probability of getting two
tails and one head?
7: What will be the correlation coefficient r between variables X and Y if
varX=4,varY=9 and Cov(X,Y)=3