# One sample t test

A shipment of crankshafts is believed to be defective. A simple random sample of 16 is drawn from a large shipment. Check to see if the sample is any different from the assumed population mean of 224.

224.12

223.960

224.098

224.001

224.089

224.057

224.017

223.987

223.913

223.982

223.976

223.999

223.989

223.902

223.961

223.980

https://brainmass.com/statistics/students-t-test/simple-random-sample-assumed-population-mean-128983

#### Solution Preview

Please see the attached file.

Question

Simple random sample / assumed population mean

A shipment of crankshafts is believed to be defective. A simple random sample of 16 is drawn from a large shipment. Check to see if the sample is any different from the assumed population mean of 224.

224.12

223.960

224.098

224.001

224.089

224.057

224.017

223.987

223.913

223.982

223.976

223.999

223.989

223.902 ...

#### Solution Summary

Step by step method for testing the hypothesis under 5 step approach is discussed here. Excel template for each problem is also included. This template can be used to obtain the answers of similar problems.