Further Mathematics 7367: Confidence Intervals Topical Past Paper Questions
AQA A Level Further Mathematics (7367) past-paper questions on Confidence Intervals, free. This topic is frequently examined across 6 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
The length, X cm, of teeth for an extinct breed of shark is known to have a normal distribution. A random sample of 250 teeth has the following summary statistics. (a) Construct a 91% confidence interval for the population mean length of the shark teeth Give your limits to two de…
The masses of tins of a particular brand of spaghetti are normally distributed with mean $ \mu $ grams and standard deviation 4.1 grams. A random sample of 11 tins of spaghetti has a mean mass of 401.8 grams. Construct a 98% confidence interval for $ \mu $, giving your values to…
The mass, X, in grams of a particular type of apple is modelled using a normal distribution. A random sample of 12 apples is collected and the summarised results are $$ \sum x=1038\quad and\quad\sum x^{2}=90\ 100 $$ (a) A 99% confidence interval for the population mean of the mas…
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