Daily practice

Six-a-Day

Six focused multiple-choice questions for recall, fluency and confidence. Each question has close distractors and one answer that is clearly further away.

Practice setup

Current set: A Level - Statistics

Generate a set

Choose the level and stream, then select one answer for each question.

DifficultyStream

Question 1A Level - Statistics

Hypothesis testing

In a one-tailed 5% test with 100 outcomes, the critical region has 15 outcomes. How many outcomes are outside the critical region?

Question 2A Level - Statistics

Normal distribution

For X ~ N(50, 10²), what is the mean?

Question 3A Level - Statistics

Binomial distribution

If X ~ B(120, 0.4), find E(X)

Question 4A Level - Statistics

Large data set

What does large data set mean in statistics?

Question 5A Level - Statistics

Normal distribution calculations

For X ~ N(50, 10²), find the 𝑧-value for X = 65

Question 6A Level - Statistics

Critical regions and p-values

What decision or region matches: 5% one-tailed upper test?