Skip to content

Course home

4.6 Statistical hypothesis testing (A-level only)

4.6 Statistical hypothesis testing (A-level only)

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152
Question 130

A company states that the probability that any one of its pens is defective is 0.08.

a.

For a random sample of 15 pens, find the probability that at least 2 are defective.

[2]
b.

An employee claims that the probability of a defective pen is greater than 0.08. In a random sample of 20 pens, 3 are defective. Test the claim at the 5% level of significance, stating your hypotheses clearly.

[5]
Markscheme

4.6 Statistical hypothesis testing (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.6 Statistical hypothesis testing (A-level only)

209 exam-style questions on CCEA A Level Maths 4.6 Statistical hypothesis testing (A-level only), covering 4.6.1 Statistical hypothesis testing (A-level only), 4.6.2 Statistical hypothesis testing (A-level only), 4.6.3 Statistical hypothesis testing (A-level only), 4.6.4 Statistical hypothesis testing (A-level only), and 4.6.5 Statistical hypothesis testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank