
June 2019 Paper 72  Statistics 2
In this session, the June 2019 S2 Paper (Paper 72) is discussed with full explanation.
The following concepts are discussed:
Question 1  Poisson distribution
 Poisson distribution with unknown number of trials (n)
Question 2  Distribution of Sample Means (Xbar)
 Central Limit Theorem
Question 3  Unbiased Estimates to Population Mean µ and Population Variance σ^{2}
 Hypothesis Testing of Population Mean µ ; Lowertail test
Question 4  Linear Combination of Normal Variates
 Normal distribution
Question 5  Hypothesis Testing of Population Proportion p ; Lowertail test
 Type I Error in hypothesis testing and probability of making the error
 Confidence Interval for Population Mean µ
 Interpretation of Confidence Interval
Question 6  Continuous Random Variables
 Median of a Continuous Random Variable
 Expectation E(X) of a Continuous Random Variable
Question 7  Poisson Approximation to a binomial distribution
 Conditions for Poisson Approximation
 Hypothesis Testing of Poisson Mean (λ) ; Lowertail test
Notes (Answers) and the Question Paper are available in the documents section

Session 57: June 2019 Paper 72  S2

June 2019 Paper 72  S2

Question 7 7 mins
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Question 7

Question 6 4 mins
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Question 6

Question 5 7 mins
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Question 5

Question 4 6 mins
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Question 4

Question 3 5 mins
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Question 3

Questions 2 and 1 5 mins
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Questions 2 and 1

Question 7 7 mins

June 2019 Paper 72  S2

Excercise Files
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