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The number of work-related injuries per week that occur at the manufacturing plant of the Excelsior Cor poration is a Poisson-distributed random variable with mean >.. 3, according to company analysts. In an at tempt to lower insurance costs, the corporation insti tutes a program of intensive safety instruction for all employees. Upon completion of the program, a 12-week period produced an average of 2 accidents per week.
a. Design a uniformly most powerful level-.10 test of the null hypothesis H0 : >.. 3 versus the alterna tive hypothesis Ha : >.. <>3 having size as close as possible to, without exceeding, .10.
b. Test the null hypothesis using the test you defined in part (a). What can you say about the effectiveness of the safety program?
What sample size would be needed to obtain an error of +/- 10 square millimeters with 99% confidence?
If the scientist want to cut the margin of error in half how many deer must they inspect?
Locate an individual in your company who exemplifies these characteristics and interview them on the importance of understanding statistics and the challenges they may face with data. Ask them how they demonstrate these characteristics in their jo..
city officials in fort lauderdale florida are trying to decide whether to evacuate coastal residents in anticipation of
What must be true about the data sets to make the confidence intervals you constructed in parts (a) and (b) valid?
Describe the sampling distribution of p-hat, the sample proportion of college students with the cell phones who send or receive the text messages with their phones.
what are your thoughts and research regarding issues facing us? what decision making process needs to be implemented? i
an investigator wants to test if there is a difference in endotoxin levels in children who are exposed to endotoxin
If the safety commission determines that an elevator design is safe if its operating load is exceeded less than 0.05% of the time, does this prototype meet these saftey guidelines?
In a normal population with sigma=20, a random sample of size n gave X(mean)=56.53. At the 5% significance level, make a two-tailed test of the null hypothesis mu=50, when (a) n=24 (b) n=36
audits. between quarterly audits a company checks its accounting procedures to detect problems before they become
w. edwards deming in his red bead experiment had a box of 4000 beads of which 800 were red and 3200 were white.
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