Mathematics (AS & A Level) · May / June 2025 · Paper 62 · Question 2
9709
As printed in the paper
The question as text
The height of a certain species of plant is denoted by H cm. The heights of a random sample of 100 plants were measured, and the following results were found. • The mean, h , for the sample was 80.2. • An unbiased estimate of the population variance of H was 15.6. Calculate the value of . h2 R [3]
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.