The manufacturing specifications require a particular car component to have an average weight of 8.3kg. The record of weights in kg of a randomly selected sample of a particular car component is...

Extracted text: The manufacturing specifications require a particular car component to have an average weight of 8.3kg. The record of weights in kg of a randomly selected sample of a particular car component is presented in the table below. Assume the weights of car component are normally distributed. 8.1 8.4 8.3 8.2 8.5 8.6 8.4 8.3 8.5 8.7 8.4 8.2 8.8 8.2 8.2 8.3 8.1 8.3 8.4 8.5 Test the hypothesis that the manufacturing process is producing the car component with an average weight of 8.3kg at 1% level of significance.