Mathematics, 07.03.2020 03:23 nsutton9985
A battery manufacturer claims that the lifetime of a certain type of battery has a population mean of 40 hours and a standard deviation of 5 hours. Let X represent the mean lifetime of the batteries in a simple random sample of size 100.
If the claim is true, what is P(X(bar) < 36.7)?
Whenever I work out the problem I keep getting a P that's much too large to be correct. A step in the right direction would be very much appreciated!
Answers: 1
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A battery manufacturer claims that the lifetime of a certain type of battery has a population mean o...
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