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2.4.8 Normal distribution as a model (A-level only)

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Question 37

The rate of oxygen consumption for a specific species of deep-sea bacteria, measured in $μmol/h\mu \text{mol/h}$ , is normally distributed with mean $15.4$ and standard deviation $2.8$ . A marine biologist collects a random sample of $n$ such bacteria. Determine the minimum sample size $n$ such that the probability of the sample mean oxygen consumption exceeding $\, \mu \text{mol/h}$ is less than $1%1\%$ .

[4]

Markscheme

2.4.8 Normal distribution as a model (A-level only) Questions

A Level
Maths
2.4.8 Normal distribution as a model (A-level only)

79 exam-style questions on OCR (MEI) A Level Maths 2.4.8 Normal distribution as a model (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

2.4.8 Normal distribution as a model (A-level only)

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2.4.8 Normal distribution as a model (A-level only)

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Question 37

[4]

Markscheme

2.4.8 Normal distribution as a model (A-level only) Questions

A Level
Maths
2.4.8 Normal distribution as a model (A-level only)

79 exam-style questions on OCR (MEI) A Level Maths 2.4.8 Normal distribution as a model (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.