Skip to content

Course home

2.5 Statistical hypothesis testing

2.5 Statistical hypothesis testing

EasyMediumHard
12345678910111213141516
Question 2
19%

The discrete random variable X∼B(30,0.58)X \sim B(30, 0.58)X∼B(30,0.58)

a.

Find P(X≥12)P(X \geq 12)P(X≥12)

[2]
b.

A cafe expects 30% of customers to order a coffee with their breakfast. On one particular day a random sample of 40 customers that ordered breakfast is taken and 19 of them ordered a coffee. Test at the 1% significance level whether the proportion of customers ordering a coffee had increased. State your hypotheses clearly.

[5]
c.

State the conclusion you would have reached if a 5% significance level had been used for this test.

[1]
Markscheme

2.5 Statistical hypothesis testing Questions

  1. A Level
  2. /Maths
  3. /2.5 Statistical hypothesis testing

40 exam-style questions on WJEC A Level Maths 2.5 Statistical hypothesis testing, covering 2.5.1 Statistical hypothesis testing, 2.5.2 Statistical hypothesis testing, 2.5.3 Statistical hypothesis testing, 2.5.4 Statistical hypothesis testing, and 2.5 Statistical hypothesis testing. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank