plumiConfidence intervals: OCR MEI A‑Level Further Maths questions
OCR MEI A-Level Further Maths past-paper questions on 7.2 Confidence intervals, 2018–2025, with mark schemes and examiner’s reports where available. Add MadAsMaths questions to your practice, or browse them separately by topic and difficulty.
Questions from
Paper
All papers
Exam
All years
Loading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDFLoading the question…
Open the full PDF
All 15 questions on Confidence intervals, as a list
- June 2025, Statistics Major, Q3 (7 marks): Potatoes are sold in sacks of nominal weight 25 kg. As part of a trading standards check, a random sample of 50 sacks from a large batch is selected and softwar
- June 2024, Statistics Major, Q5 (10 marks): A researcher is investigating whether doing yoga has any effect on quality of sleep in older people. The researcher selects a random sample of 40 older people,
- June 2023, Statistics Major, Q5 (13 marks): Amari is investigating how accurately people can estimate a short time period. He asks each of a random sample of 40 people to estimate a period of 20 seconds.
- June 2022, Statistics Major, Q6 (11 marks): In this question you must show detailed reasoning. A particular type of skin cream is meant to contain an average of 12.2 g of liquid paraffin in a 200 g tub. A
- June 2022, AS Statistics B, Q1 (10 marks): Each working day, Beth takes a bus to her place of work. She believes that the mean time that her journey takes is 30 minutes. In order to check this, Beth sele
- November 2021, Statistics Major, Q1 (6 marks): When babies are born, their head circumferences are measured. A random sample of 50 newborn female babies is selected. The sample mean head circumference is 34.
- November 2021, Statistics Major, Q7 (10 marks): A physiotherapist is investigating hand grip strength in adult women under 30 years old. She thinks that the grip strength of the dominant hand will be on avera
- November 2021, AS Statistics B, Q1 (9 marks): Over time LED light bulbs gradually lose brightness. For a particular type of LED bulb, it is known that the mean reduction in brightness after 10 000 hours is
- November 2020, Statistics Major, Q4 (6 marks): An amateur meteorologist records the total rainfall at her home each day using a traditional rain gauge. This means that she has to go out each day at 9 am to r
- November 2020, Statistics Major, Q7 (9 marks): The lengths in mm of a random sample of 6 one-year-old fish of a particular species are as follows. 271 293 306 287 264 290 (a) State an assumption required in
- June 2019, Statistics Major, Q4 (7 marks): Shellfish in the sea near nuclear power stations are regularly monitored for levels of radioactivity. On a particular occasion, the levels of caesium-137 (a rad
- June 2019, Statistics Major, Q7 (11 marks): A swimming coach believes that times recorded by people using stopwatches are on average 0.2 seconds faster than those recorded by an electronic timing system.
- June 2019, AS Statistics B, Q6 (11 marks): The label on a pack of strawberries in a large batch states that it holds 250 g of strawberries. A random sample of 40 packs from the batch is selected and soft
- June 2018, AS Statistics B, Q1 (6 marks): The birth weights, in kilograms, of a random sample of 9 captive-bred elephants are as follows. 94 138 130 118 146 165 82 115 69 A researcher uses software to p
- June 2018, AS Statistics B, Q6 (10 marks): A company has a large fleet of cars. It is claimed that use of a fuel additive will reduce fuel consumption. In order to test this claim a researcher at the com
Questions, mark schemes and examiner’s reports are © OCR, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? OCR MEI A-Level Further Maths past papers.
The Plumi iPad app also offers exam-style questions with AI feedback on your handwritten working.