Practice Q3. Bags checked for a certain airline flight have a mean weight of 23 kg with a standard deviation of 7 kg. A random sample of 43 bags is drawn. What is the probability that the sample mean weight is less than 21 kg? Find the 80th percentile of the sample mean weights. (i). (ii). (iii). How many bags must be sampled so that the probability is 0.02 that the sample mean weight is less than 21 kg?

Practice Q3. Bags checked for a certain airline flight have a mean weight of 23 kg with a standard deviation of 7 kg. A random sample of 43 bags is drawn. What is the probability that the sample mean weight is less than 21 kg? Find the 80th percentile of the sample mean weights. (i). (ii). (iii). How many bags must be sampled so that the probability is 0.02 that the sample mean weight is less than 21 kg?

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.3: Special Probability Density Functions

Problem 40E: Pygmy Height The average height of a member of a certain tribe of pygmies is 3.2ft, with a standard...

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