# Math Help - Interval Estimates

1. ## Interval Estimates

Sample of 16 cars have been randomly selected and the engine noise in the cabin has been measured.

The sample mean is 30dB and sample standard deviation is 5dB.

Calculate 95% interval estimate for the population mean given that the noise follows approximately Normal Distribution.

2. Originally Posted by tagiraldo
Sample of 16 cars have been randomly selected and the engine noise in the cabin has been measured.

The sample mean is 30dB and sample standard deviation is 5dB.

Calculate 95% interval estimate for the population mean given that the noise follows approximately Normal Distribution.
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