A Clear Guide to the Test and the -Test IB Mathematics • Statistics and Probability • Hypothesis Testing • Tests • -Tests Lesson Overview This post gives a clear explanation of two major families of hypothesis tests used in IB …
Piecewise Cost Functions and Mean Price IB Mathematics HL • Functions • Algebraic Modelling • Piecewise Functions Lesson Overview In this lesson, we model the total cost of ordering custom mugs using a piecewise function. The pricing changes after the …
Binomial Distribution — Blood Type O IB Mathematics HL • Probability • Binomial Distribution • Expected Value and Standard Deviation Lesson Overview In this lesson, we model the number of babies with blood type O using a binomial distribution. This …
Savings Growth and Annuity Withdrawals IB Mathematics AI HL • Financial Mathematics • TVM Solver • Compound Interest and Annuities Lesson Overview In this lesson, we use the TI-84 TVM Solver to model two connected financial situations: a savings account …
Sound Intensity and Logarithmic Functions IB Mathematics HL • Logarithms • Exponential Functions • Modelling in Context Lesson Overview In this lesson, we use a logarithmic model to relate the loudness of a sound, measured in decibels (dB), to its …
Scientific Notation — Exam-Style Problem Set These questions combine scientific notation, modelling with spheres, and percentage error. All solutions show full reasoning and correct significant figures (3 s.f. unless stated). Instructions Write answers in the form , where . Use …