## Question

###### The sales representative for a manufacturer of a new machinepart claims that the new machine part will decrease cost permachine to at least 38$ per unit. A line manager installs theproduct on 30 of the machines and finds that the average cost wasonly 42$ with a standard deviation of 10.2$. Test the claim ofsales representative when the probability of rejecting a true nullhypothesis is equal to .10? Interpret your findings. Show the stepsof hypothesis testing precisely. Use proper notation.

The sales representative for a manufacturer of a new machine part claims that the new machine part will decrease cost per machine to at least 38$ per unit. A line manager installs the product on 30 of the machines and finds that the average cost was only 42$ with a standard deviation of 10.2$. Test the claim of sales representative when the probability of rejecting a true null hypothesis is equal to .10? Interpret your findings. Show the steps of hypothesis testing precisely. Use proper notation.

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