In: Statistics and Probability
Carlson Mining, Inc. has 12 large pumps that pump water from the mines it operates. | ||||
Management has been concerned lately about the amount of money required to | ||||
repair malfunctioning pumps. These costs are sums over and above the amounts | ||||
spent for routine maintenance. When asked what factors they thought might affect | ||||
the mean monthly repair costs, employees suggested the age of the pumps and the | ||||
number of hours of operation. The following information was collected. | ||||
Choose the relevant Summary Output to answer the questions. Note that the | ||||
mean monthly repair costs are in dollars, so when questions ask about repair | ||||
costs, make sure that your answers reflect that. | ||||
Mean Weekly Hours of Operation over Past Year | Age of Pump at First of Year (months) | Mean Monthly Repair Costs over Past Year | ||
28 | 80 | $1,049 | ||
26 | 48 | $1,095 | ||
15 | 27 | $882 | ||
12 | 2 | $447 | ||
16 | 13 | $715 | ||
21 | 55 | $542 | ||
13 | 30 | $415 | ||
21 | 35 | $454 | ||
16 | 36 | $495 | ||
12 | 13 | $370 | ||
18 | 28 | $448 | ||
18 | 49 | $509 |
• What is your pvalue? | ||||
• Did you reject or not reject H0? | ||||
• The mean monthly repair costs (are / are not not) related to the age of the pumps. | ||||
The linear relationship between the mean monthly repair costs and the age of the | ||||
pumps is (weak / moderate / strong / perfect). | ||||
I have consider x is Age of Pump at First of Year (months ) and
y is Mean Monthly Repair Costs over Past Year
also i have calculated by using SPSS