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2.4.6 Probabilities using the normal distribution (A-level only)

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Question 25

The operational flight time, $T$ minutes, of a specific survey drone is modeled by a normal distribution such that $\sim \text{N}(\mu, \sigma^2)$ .

It is given that the probability of a flight duration being less than 28.4 minutes is 0.92.

Determine:

$P (T > 28.4)$

[2]

$P(μ<T<28.4)P(\mu < T < 28.4)$

[2]

$\mu \mid T < 28.4)$

[3]

Markscheme

2.4.6 Probabilities using the normal distribution (A-level only) Questions

A Level
Maths
2.4.6 Probabilities using the normal distribution (A-level only)

147 exam-style questions on OCR A Level Maths 2.4.6 Probabilities using the normal distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

2.4.6 Probabilities using the normal distribution (A-level only)

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2.4.6 Probabilities using the normal distribution (A-level only)

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Question 25

The operational flight time, $T$ minutes, of a specific survey drone is modeled by a normal distribution such that $\sim \text{N}(\mu, \sigma^2)$ .

It is given that the probability of a flight duration being less than 28.4 minutes is 0.92.

Determine:

$P (T > 28.4)$

[2]

$P(μ<T<28.4)P(\mu < T < 28.4)$

[2]

$\mu \mid T < 28.4)$

[3]

Markscheme

2.4.6 Probabilities using the normal distribution (A-level only) Questions

A Level
Maths
2.4.6 Probabilities using the normal distribution (A-level only)

147 exam-style questions on OCR A Level Maths 2.4.6 Probabilities using the normal distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.