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The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1521 grams and...

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1521 grams and standard deviation 166 grams. Use the TI-84 Plus calculator to answer the following. (a) What proportion of broilers weigh between 1185 and 1283 grams? (b) What is the probability that a randomly selected broiler weighs more than 1650 grams? (c) Is it unusual for a broiler to weigh more than 1710 grams? What is the probability that a broiler weighs over 1710 grams? Round the answers to at least four decimal places.

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

Press 2nd Vars -> normalcdf

Part a)

P ( 1185 < X < 1283 ) = 0.0543439

Part b)

P ( X > 1650 ) = 0.21855

Part c)

P ( X > 1710 ) = 0.127445

No, since the probability is greater than 5% i.e > 0.05, event is not unusual.

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