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Mathematical Methods — Question 10

QCAA 2021, Paper 1 · 1 mark

Q10 · 2021 · Technology-freeSimple familiar1 mark

QUESTION 10

Handspans of teenagers are approximately normally distributed, with a mean of 15 cm and a standard deviation of 2 cm. Which of the following groups is expected to be the largest?
(A)
teenagers with handspans that are between 7 cm and 11 cm
(B)
teenagers with handspans that are between 11 cm and 15 cm
(C)
teenagers with handspans that are between 13 cm and 17 cm
(D)
teenagers with handspans that are between 17 cm and 21 cm
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