(CLO2:PLO4:C3)(CLO2:PLO7:C3) FORMULA SHEET Sturges Rule: No. of classes : c=1+3.3logn range Class width : Arithmetic mean : n n [X( ) if n is odd (+x() if niseven * =L + 2 -F Median : Mode : Standard deviation : n - 1 n-1 IQR : 2 -2, Cat " + 1 -th term 4 Q, at 3(1 + 1 th term 3(mean - median) mean - mode Coefficient of skewness : standard deviation Or standard deviation standard deviation Coefficient of variation : -x 100% mean Probability : P(AUB) = P(A) + P(B) mutually exclusive events P(AUB) = P(A) + P(B) - P(AnB) not mutually exclusive events P(An B) = P(A)P(B) independents events P(A/ B) = P(AnB) P(B) conditional probability Page 1 of 710:05 .ul $ on infraplusJukLedumy (CLOl :PL01:C3}(CL01:PL02:C3) Question 5 (ll! marks) The table below shows the weight of 100 honeydews harvested From Happy Farm. (a) Fill in the table below and determine the value of mean and standard deviation for the weight of these (a) What can you say about the variation in this sample data? (2 marks) (CLOl :PL012C4HCL012PL02:C4) Question 6 (6 Marks] A firm has tendered for two independent contracts. lt estimates that it has probability 0.4 of obtaining contract A and probability lll of obtaining contract E. Find the probability that the rm obtains: (a) either one contract; (2 marks) {13} neither of the contacts. (2 marks) (c) contract El given that the rm has obtained contract A. {2 marks} 10:05 infraplus.iukl.edu.my Question 7 (6 Marks) In company MESTIJAYA, 80% of the project are handled by Kasim while the rest by Berry. The probability that a project handled by Kasim is completed on time is 75%. The probability that a project handled by Berry not completed on time is 20%. () What is the probability that a particular project completed on time? (2 marks) (b) If a project is not completed on time, what is the probability it is handled by Berry? (2 marks) (c) If a project fails to complete on time, what is the probability it is handled by Kasim? (2 marks) (CLO2:PLO4:C3)(CLO2:PLO7:C3) FORMULA SHEET Sturges Rule: No. of classes : = 1+3 3logn range Class width i2- C Arithmetic mean : if nis odd Median : "-tex()] niseven Mode : Lu+ ( A, + A, ) Standard deviation : n-1 IQR : 2 -0 Q, at " + 1 4 Q, at (1 + 1the term 3(mean - median) mean - mode Coefficient of skewness : standard deviation of standard deviation standard deviation x 100% Coefficient of variation : mean Probability : PUUB) - P()+ P(B) mutually exclusive events P(AUB) - P(A)+ P(B)-Pun#) not mutually exclusive events P(AnA) - P(A)PCB) independents events P(B) conditional probability + 8