a manufacturer of electrical components makes resistors intended
to have a resistance of 1000 ohms. The resistance, x ohms of each
resistor is measured... summation x = 18980 , population mean is u
ohms .. using 5% significance level, carry out 2 tail test ..null
hypothesis u = 1000
Assume population standard deviation is 105 ohms, explain your
reasons and state any assumptions, what test will you use ?