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Production facilities must keep track of injuries on the job by their employees, known as recordables (injuries severe enough that they must be reported to the appropriate government agency). A large chemical plant maintains a sign at the entrance to the plant with the current number of injury-free work days. Assume that on any one day a recordable injury occurs with probability 0.02, and assume that this probability is the same for every day of the week.
(a) What is the probability that the sign at the plant entrance reads 5 days.
(b) What is the probability that the number on the sign is less than 5?
(c) What is the probability that the number on the sign is greater than 5?
(d) What is the average number of days that the plant goes without an injury?
(e) In an attempt to decrease the injury rate at the plant, a safety initiative is undertaken. The next five strings of days without injuries at the plant were 92, 85, 103, 48, and 72. Was the initiative successful in lowering the injury rate? Justify your answer.
Choice of exponential smoothing constant w has little or no effect on forecast values using exponential smoothing.
Find the probability that a randomly selected employee earns less than $5.43.
You are testing a null hypothesis that there is no linear relationship between two X and Y. From your sample of n=20, you determine that SSR=60 and SSE=40
For a population with a mean of (u)=50 and a standard deviation of (o)=10, how much error on average would you expect between the sample mean (M) and the population mean for the following samples
The soap and detergent association issued its fifth annual clean hands report card survey for 2009.
A City Survey states that 70 percent of all business owners favor increasing the parking fees. The city has commissioned a random sample of n = 100 business owners.
a new sales training program has been instituted at a rent-to-own company. prior to the training 10 employees were
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect? What percent of the garages take between 29 hours and 34 hours to erect?
1. suppose 2 batteries are randomly chosen from a bin containing 10 batteries of which 7 are good and 3 are defective.
Advertising coefficient is 200 and t stat is 1.75. Which of the following statements is an accurate interpretation of the situation when using an alpha of .10
Assume the probability that a person has the desease is 0.03 for all people, independently of each other, and compute the expected number of tests necessary for each group.
What is the probability that the sample mean breaking strength of a random sample of 100 pieces of fabric is less than 1 .8 kg/mm?
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