The Diameter of Holes Drilled into Flat-Pack Furniture Is Normally

question 9

Multiple Choice

The diameter of holes drilled into flat-pack furniture is normally distributed with a mean of 5mm and a standard deviation of 0.15mm. If a single item of furniture has 50 holes in it, how many have a diameter of more than 5.2mm (to the nearest whole number) ?

• A) 5
• B) 6
• C) 7
• D) 8

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