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H2 Math Summary Notes
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Pure Mathematics
Unit 1 Inequalities1 Question 
Unit 2 Graphing Techniques7 Questions

Unit 3 Transformation of Graphs2 Questions

Unit 4 Functions6 Questions

Unit 5 APGP & Recurrence Relations6 Questions

Unit 6 Sigma Notation6 Questions

Unit 7 Techniques of Differentiation2 Questions

Unit 8 Applications of Differentiation9 Questions

Unit 9 Maclaurin Series2 Questions

Unit 10 Techniques of Integration6 Questions

Unit 11 Applications of Integration4 Questions

Unit 12 Differential Equations2 Questions

Unit 13 Vectors11 Questions

Unit 14 Complex Numbers6 Questions

StatisticsUnit 15 Permutation and Combinations7 Questions

Unit 16 Probability5 Questions

Unit 17 Discrete Random Variable4 Questions

Unit 18 Binomial Distribution5 Questions

Unit 19 Normal Distribution7 Questions

Unit 20 Sampling and Estimation8 Questions

Unit 21 Hypothesis Testing6 Questions

Unit 22 Correlation and Linear Regression5 Questions
Lesson 21,
Question 4
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Worked Example 4
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A bakery claimed that the average number of loaves of bread sold per day is more than \(150\), with variance \(2500\). A random sample of \(50\)days was taken and the sales, \(x\) loaves, for each day were recorded. It was found that
\(\sum{\left( x140 \right)}=120\)
(i)
State, with a reason, whether it is necessary to assume that the bread sales follow a normal distribution in order to test this claim at the \(10\%\) significance level.
(ii)
Test at the \(10\%\) significance level whether the bakery’s claim was valid.
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