The weight of small dogs can be modelled by a normal distribution with a mean weight of 8.4 kg and a standard deviation of 2.1 kg. The weight of large dogs can be modelled by a normal distribution with a mean weight of 17.4 kg and a standard deviation of 4.2 kg. A customer comes in with a small and large dog. What is the probability they weigh at least 30 kg combined?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The weight of small dogs can be modelled by a normal distribution with a mean weight of 8.4 kg and a standard deviation of 2.1 kg. The weight of large dogs can be modelled by a normal distribution with a mean weight of 17.4 kg and a standard deviation of 4.2 kg. A customer comes in with a small and large dog. What is the probability they weigh at least 30 kg combined?

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