Mathematics (AS & A Level) · Feb / March 2020 · Paper 62 · Question 7

A national survey shows that 95% of year 12 students use social media. Arvin suspects that the percentage of year 12 students at his college who use social media is less than the national percentage. He chooses a random sample of 20 students at his college and notes the number who use social media. He then carries out a test at the 2% significance level.

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