Question
In: Statistics and Probability
A manufacturer of widgets wants to test a new widget-producing machine to determine if it can...
A manufacturer of widgets wants to test a new widget-producing
machine to determine if it can make an average of 20 widgets per
second before deciding to invest in the machine. The standard to
reject the new machine is if it makes an average of less than 20
widgets per second. Here are data from a small random sample:
15.6, 16.2, 22.5, 20.5, 16.4, 19.4, 19.6, 17.9, 12.7, 14.9
- Assuming the population follows a normal distribution, is there evidence that the new machine should be rejected at the 0.01 significance level? State the hypotheses, check the conditions, calculate the test statistic, find the p-value, and make a conclusion in a complete sentence related to the scenario.
Solutions
orchestra answered 2 years agoRelated Solutions
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A
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whether it meets new air pollution standards. The mean emission of
all engines of this type must be lower than 20 parts per million of
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and the emission level of each is determined. The data (in parts
per million) are listed below:15.6, 16.2, 22.5, 20.5, 16.4, 19.4, 16.6, 17.9, 12.7, 13.9a). At 5% level of significance, is there...
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