The Drain County Health Department knows that venereal disease cases in Drain county have a mean of 12 per week and are Poisson distributed. This week there were 18 cases. They are concerned that this might be unusual and an epidemic is breaking out. What is the probability of 18 or more cases in a given week? What is the probability of exactly 18? Which is the more relevant piece of information?
The county health inspector knows from past experience that 90 percent of restaurants in the...... ... in the county will pass her health inspection. Checking her records she finds that 2 of the 5 Grease Burger franchises in the city have failed the health inspection. What is the probability that...
General Kleinherbst is concerned with the VD (venereal disease) epidemic among soldiers in Europe....... ... the award-winning film VD: Just between Friends. At another inspection 180 days later, Kleinherbst finds that 43 of the 200 troops inspected have VD. What can you say about the program...
The Fairfield County Department of Public Health tests water for contamination due to the presence...... ... in a public swimming area. Find the probability that a combined sample from five public swimming areas will reveal the presence of E. coli bacteria. Is that probability low enough so that...
For each of the following examples of tests of hypothesis about the population proportion, show the rejection and non-rejection regions on the graph of the sampling distribution of the sample proportion. a. A two-tailed test with ? = .05 b. A left-tailed test with ? = .02 c. A right-tailed test...
A 100m tall chimney emits sulphur dioxide at a rate of 2.5kg/s in a highly buoyant plume. The plume rise (?h) after exiting the chimney follows a trajectory which is given by the equation: ?h = 0.13 x2/3 (all dimensions in metres). The wind speed is 10m/s and the local ground roughness length...
Valencia Products makes automobile radar detectors and assembles two models: LaserStop and SpeedBuster. The firm can sell all it produces. Both models use the same electronic components. Two of these can be obtained only from a single supplier. For the next month, the supply of these is limited to...
Which statement about the graphs is true? Graph A O Graph A is a valid density curve because the part of the graph from 2 to 6 is below the horizontal axis. 0.25 0.1875 Graph A is not a valid density curve because the part of the graph from 1 to 2 is above the horizontal axis. O Graph B is not a...
The sample of eight companies in the aerospace industry, referred to in Exercise 38, was surveyed as to their return on investment last year. The results are 10.6, 12.6, 14.8, 18.2, 12.0, 14.8, 12.2, and 15.6. a. Compute the sample variance. b. Determine the sample standard deviation.
Appeals Court Justice Ralph Adam Whine is concerned that plea bargains are permitted in too many criminal cases. He suspects that the local District Attorney, Susan Blessner, is accepting more plea bargains just to jerk his chain. Whine knows that 80 percent of all cases in the entire state result...
George Fastrack, head of the Bureau of Obfuscation’s United Way drive, wants to know the average United Way pledge among Obfuscation Bureau employees ( pledges are normally distributed). George takes a sample of 10 and gets the results shown in the accompanying table. What is George’s best...
1) What is the probability you will sell 3 or less hot dogs in 10 minutes Use the following scenario to answer the next 5 questions. As a way of fund raising, you decide to set up a hot dog stand, after a few weeks of doing this you sell 8 hot dogs every 10 minutes. 2) What is the probability you...