Review practice
Choose a section to work through its questions and solutions. Your progress is shared across pages. Ranges follow collection order; original source labels are kept on each question.
Section 1 · Questions 1–6
Test a revision-time claim and find a minimum sample size · Invert a two-sided test without imposing integer means · +4 more
- Question 1 · Test a revision-time claim and find a minimum sample size
- Question 2 · Invert a two-sided test without imposing integer means
- Question 3 · Find significance levels that reject a wage claim
- Question 4 · Test a filling machine using a sample standard deviation
- Question 5 · Interpret an upper-tail p-value in context
- Question 6 · Deduce a one-sided result from a two-sided rejection
Section 2 · Questions 7–10
Compare tests before and after pooling two samples · Audit the sampling frame and a frequency-table test · +2 more