9709 · topic questions
Sampling and estimation
12 past-paper questions on Sampling and estimation
The random variable X has the distribution B(8, 3/4). A random sample of 100 values of X is chosen, and the sample mean, X, is…
Practise the full question →A biased spinner has four sides. Each side is of a different colour: yellow, red, green or black. The probability, p, that the…
Practise the full question →A student wishes to estimate the proportion, p, of students at her college who have exactly one brother. She surveys a random…
Practise the full question →The times, T minutes, taken by a random sample of 75 students to complete a test were noted. The results were summarised by Σt =…
Practise the full question →The time taken in minutes for a certain daily train journey has a normal distribution with standard deviation 5.8. For a random…
Practise the full question →The height of a certain species of plant is denoted by Hcm. The heights of a random sample of 100 plants were measured, and the…
Practise the full question →A random sample of 8 boxes of cereal from a certain supplier was taken. Each box was weighed and the masses in grams were as…
Practise the full question →You should now assume that your estimates from part (a) are the true values of the population mean and variance of T. The times…
Practise the full question →At Florence's college, in a random sample of 40 students, it was found that 5 own a Pumpkin phone. (c) Calculate an approximate…
Practise the full question →There were 30 students in Henri's sample. He asked each of them how much time, X hours, they spent on social media each week, on…
Practise the full question →The heights of a certain species of deer are known to have standard deviation 0.35 m. A zoologist takes a random sample of 150 of…
Practise the full question →Henri wants to choose a random sample from the 804 students at his college. He numbers the students from 1 to 804 and then uses…
Practise the full question →
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Sampling and estimation (9709) past-paper questions — marked instantly
These are real Cambridge Mathematics past-paper questions on Sampling and estimation. Open one, attempt it, then upload your working — MarkScheme grades it against the official 9709 mark scheme so you see exactly where the marks are won and lost on this topic.
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