2.4 Statistical Distributions

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Question 23

The mass of flour in a bag, $W\,$ grams, is normally distributed. It is known that 5% of the bags weigh less than 495 g and 12% of the bags weigh more than 510 g.

Calculate the mean, $μ\mu$ , and the standard deviation, $σ\sigma$ , of the masses of these bags.

[6]

2.4 Statistical Distributions

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Question 23

The mass of flour in a bag, $W\,$ grams, is normally distributed. It is known that 5% of the bags weigh less than 495 g and 12% of the bags weigh more than 510 g.

Calculate the mean, $μ\mu$ , and the standard deviation, $σ\sigma$ , of the masses of these bags.

[6]

2.4 Statistical Distributions

Question 23

2.4 Statistical Distributions Questions

2.4 Statistical Distributions

Question 23

2.4 Statistical Distributions Questions