Mathematics, 21.03.2020 04:05 davelopez979
A sample of 30 randomly selected oranges was taken from a large population, and their diameters were measured. The mean diameter of the sample was 91 mm and the standard deviation was 8 mm. Assuming a Normal distribution, calculate (correct to one decimal place) 85% confidence limits for the mean diameter of the whole population of oranges.
A 87.9 mm and 94.1 mm
B 89.9 mm and 93.1 mm
C 88.1 mm and 93.9 mm
D 88.9 mm and 93.1 mm
Answers: 3
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