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 1 year agoRelated Solutions
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A
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it meets new air pollution standards. The mean emission u, of all
engines of this site must be approximately 20 ppm of carbon. if it
is higher than that they will have to redesign parts of the engine.
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all engines of this type must be lower than 20 parts per million of
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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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