H2 Math Summary Notes

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Pure Mathematics
Unit 1 Inequalities
1 Question
Basics of Test Point Method
Unit 2 Graphing Techniques
7 Questions
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Unit 3 Transformation of Graphs
2 Questions
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Unit 4 Functions
6 Questions
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How to Use GC to Plot an Inverse Graph
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Unit 5 APGP & Recurrence Relations
6 Questions
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Unit 6 Sigma Notation
6 Questions
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Unit 7 Techniques of Differentiation
2 Questions
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Unit 8 Applications of Differentiation
9 Questions
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Unit 9 Maclaurin Series
2 Questions
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Unit 10 Techniques of Integration
6 Questions
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Unit 11 Applications of Integration
4 Questions
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Unit 12 Differential Equations
2 Questions
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Unit 13 Vectors
11 Questions
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Unit 14 Complex Numbers
6 Questions
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Statistics
Unit 15 Permutation and Combinations
7 Questions
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Unit 16 Probability
5 Questions
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Unit 17 Discrete Random Variable
4 Questions
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Unit 18 Binomial Distribution
5 Questions
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Unit 19 Normal Distribution
7 Questions
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Unit 20 Sampling and Estimation
8 Questions
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Unit 21 Hypothesis Testing
6 Questions
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Unit 22 Correlation and Linear Regression
5 Questions
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Worked Example 6

H2 Math Summary Notes Unit 20 Sampling and Estimation Worked Example 6

The random variable [latex]X[/latex] has mean [latex]25[/latex] and standard deviation [latex]4.5[/latex]. A random sample of [latex]500[/latex] observations is taken. Find the value of [latex]a[/latex], correct to [latex]3[/latex] decimal places, such that [latex]\text{P}\left( \overline{X}>a \right)= 0.75[/latex].

Explain whether it is necessary to apply the Central Limit Theorem in this case.

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