Cris Elevators Inc. claims that the average cost of elevator installation and repair is P228,760. A sample of 60 repairs has an average of 227,880. The standard deviation of the sample is 3000. At a =...


Cris Elevators Inc. claims that the average cost of elevator installation and repair is<br>P228,760. A sample of 60 repairs has an average of 227,880. The standard deviation of the<br>sample is 3000. At a = 0.05, is there enough evidence to reject the company's claim?<br>

Extracted text: Cris Elevators Inc. claims that the average cost of elevator installation and repair is P228,760. A sample of 60 repairs has an average of 227,880. The standard deviation of the sample is 3000. At a = 0.05, is there enough evidence to reject the company's claim?

Jun 10, 2022
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