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A certain type of injury has tangible costs of $40,000 per occurrence and intangible costs of $150,000 per occurrence. Injury frequency is .05 per year but would be reducible to .01 per year with the installation of a new guarding system. Calculate the annual benefit the new system provides.
A certain company estimates that implementation of a safety glasses policy will cost $8000 per year. Eye injuries are rare in this plant, but 2 have occurred over the past five years at a cost of $50,000 each including direct costs and estimated hidden intangible costs. It is believed that the proposed safety glasses policy will reduce the hazard of eye injuries by 75%. If interest and inflation are ignored, the $20,000 actual cost is assumed to be typical of eye injury costs.
Perform a cost/benefit analysis to weigh the benefits of the proposed safety glasses policy against its expected costs.
If we assume that the lifetime of this type of bulb has a standard deviation of 400 hours, can we conclude at the 5% significance level that the claim is true.
A random variable has the density curve as in the graph below. Find The height of the density curve?
Sample data are reported for 50 employees of small companies, 75 employees of medium companies, and 100 employees of large companies.
Enter data into SPSS (use two columns: one for coding {0, 1, 2, 3, 4, 5} and one for DV)
At 0.05 level of significance, is there evidence of significant relationship between age group and where people mainly get their news? If so, describe the relationship.
Girl B throws 15 times, with a prob. of success = 0.2. And girl C throws 20 times, with a probability of success equal to 0.1. Determine the probability that the target will get hit at least 12 times.
Calculate probability that the sample would have a mean:
A college student is taking 5 courses in a semester. He is willing to assume that he will get an A with probability 0.10, a B with probability 0.80, and a C with probability 0.1 in each of the courses. He defines X1, X2, and X3 to be the number of..
Sketch density curves that might explain distributions with fallowing shapes: symmetric, but with two peaks( i.e., two strong clusters of observations)
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
Find at least what percentage of all homeowners in this city pay a monthly mortgage of 865 to 1,675.00.
Pattern that most accurately represents mean, median and mode is?
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