Q6 · 2022 · Technology-activeSimple familiar1 mark
QUESTION 6
A stall at the school fete sells cups of lemonade. Assuming the amount of lemonade in a cup is normally distributed with a mean of 60 mL and a standard deviation of 3 mL, 80% of the cups contain more than
(A)
52.4 mL
(B)
57.5 mL
(C)
61.6 mL
(D)
62.5 mL
WORKED SOLUTION
1 markAnswer B
ANSWER
B — 57.5 mL
Worked solution
The cutoff has 20% below it, with . Thus mL; B.
Selects option B.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.
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