Mathematics (AS & A Level) · May / June 2023 · Paper 62 · Question 3
9709
As printed in the paper
The question as text
The masses, in kilograms, of newborn babies in country A are represented by the random variable X, with mean - and variance 32. The masses of a random sample of 500 newborn babies in this country were found and the results are summarised below. n = 500 Σx = 1625 Σx2 = 5663.5
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
3(a)[3]
3(b)[5]
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.