Mathematics (AS & A Level) · May / June 2025 · Paper 63 · Question 7

In the past, one quarter of job applicants at a certain firm had first-class degrees. A change is made in the job description and a director of the firm believes that, on average, the proportion of job applicants with first class degrees has decreased. In the month following the change, there were 35 job applicants, and r of these had first-class degrees. The firm carried out a hypothesis test at the 4% significance level to test the director’s belief.

Read automatically from the paper; the printed page above is exact.