The mass of a specific variety of apple is normally distributed with a mean of 150 g and a standard deviation of 10 g.
Find the probability that the mass of an apple is:
More than 162.5 g
Less than 137.5 g
Between 137.5 g and 162.5 g
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.