Question 3 a) The table below represents the subject scores for 144 students.   Subject Male (M) Female (F) Total A: Business Ethics 4 14 18 B: Macroeconomics 17 41 58 C: Supply chain management 4 25 29 D: Clinical Psychology 28 11 39 Total 53 91 144   Calculate the following probabilities: i) Prob (A)   ii) Prob (F) iii) Prob (AIF) iv) Prob (FIA)

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Question 3

a) The table below represents the subject scores for 144 students.

 

Subject

Male (M)

Female (F)

Total

A: Business Ethics

4

14

18

B: Macroeconomics

17

41

58

C: Supply chain management

4

25

29

D: Clinical Psychology

28

11

39

Total

53

91

144

 

Calculate the following probabilities:

i) Prob (A)  

ii) Prob (F)

iii) Prob (AIF)

iv) Prob (FIA)

 

b) The number of newspapers sold daily at all 7-eleven outlets nationwide is normally distributed with a mean of 350 and a standard deviation of 30.

i) Calculate the probability that less than 300 newspapers are sold in one day

ii) Determine the number of newspapers that the 7-eleven stores should stock every day such that the probability of running out on any particular day is 10%.

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