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A company has discovered that a recent batch of batteries had manufacturing​ flaws, and has issued...

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Statistics

A company has discovered that a recent batch of batteries hadmanufacturing​ flaws, and has issued a recall. In a group of 15batteries covered by the​ recall, 3 are dead. Two batteries atrandom are chosen from the package of 15

​b) Create a probability model for the number of good batterieschosen.

​c) What's the expected number of good​ batteries?

​d) What's the standard​ deviation?

Answer & Explanation Solved by verified expert
3.5 Ratings (644 Votes)
Total batteries 15 Bad 3 and good 15 3 12 For each case the total outcomes is choosing 2 batterries out of 15 15C2 105 Break up of    See Answer
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