The average cost of sales when considering the labor cost in a service shop would be best described as _________
A) The average cost of the technician's hourly rate and parts cost
B) The average labor cost for all repairs performed in the shop
C) The average labor cost of the hourly paid Technicians
D) The average labor cost of the Flat rate paid Technicians
B
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Which of the following simple types should be used for monetary values?
A soft-drink manufacturer purchases aluminum cans from an outside vendor. A random sample of 70 cans is selected from a large shipment, and each is tested for strength by applying an increasing load to the side of the can until it punctures. Of the 70 cans, 52 meet the specification for puncture resistance.
a. Find a 95% confidence interval for the proportion of cans in the shipment that meet the specification. b. Find a 90% confidence interval for the proportion of cans in the shipment that meet the specification. c. Find the sample size needed for a 95% confidence interval to specify the proportion to within ±0.05. d. Find the sample size needed for a 90% confidence interval to specify the proportion to within ±0.05. e. If a 90% confidence interval is computed each day for 300 days, what is the probability that more than 280 of the confidence intervals cover the true proportions?
Relative humidity is measured using:
A) A particle counter to count the grains of moisture in an air sample. B) Wet-bulb and dry-bulb temperature readings. C) Temperature and barometric pressure readings. D) Comparative volume measurements.
Which of the following is TRUE of items with a larger mass?
A) Heavier objects are easier to start moving than objects with less mass. B) Objects with a larger mass have more inertia than objects with less mass. C) Objects with a larger mass have less inertia than objects with less mass. D) Moving objects with more mass tend not to stay in motion.