Although most of us buy milk by the litre, quart, or gallon, farmers measure daily production in
Question:
Although most of us buy milk by the litre, quart, or gallon, farmers measure daily production in pounds. Ayrshire cows average 47 pounds of milk a day, with a standard deviation of 6 pounds. For Jersey cows, the mean daily production is 43 pounds, with a standard deviation of 5 pounds. Assume that Normal models describe milk production for these breeds.
a) We select an Ayrshire at random. What’s the probability that she averages more than 50 pounds of milk a day?
b) What’s the probability that a randomly selected Ayrshire gives more milk than a randomly selected Jersey?
c) A farmer has 20 Jerseys. What’s the probability that the average production for this small herd exceeds 45 pounds of milk a day?
Step by Step Answer:
a According to the Normal model the probability that an Ayrshire averages more than 50 pounds of mil...View the full answer
Business Statistics
ISBN: 9780133899122
3rd Canadian Edition
Authors: Norean D. Sharpe, Richard D. De Veaux, Paul F. Velleman, David Wright
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