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We wish to construct a 95% confidence interval (CI) for a population mean with a width of 2.4 (between the upper and lower limits). What should the minimum sample size (as an integer) be in order to (potentially) achieve such an interval assuming that

Occupational Safety and Health Administration (OSHA) regulations focus solely on discrimination and harassment in the workplace.

Health Maintenance Organizations (HMOs) typically allow patients to see any doctor without restrictions.

What does the Americans with Disabilities Act (ADA) require from employers?

Two different random samples were collected from the same population. Each sample has a different sample size. Confidence intervals (two-sided) were constructed on the population mean, one for each sample. The first sample had 60 observations, had a sample mean of 18.2, and a sample standard deviation of 3.5. A 90% confidence interval was constructed. The second sample had 35 observations, had a sample mean of 25.9, and a sample standard deviation of 4.9. A 95% confidence interval was constructed. How do the widths of the two confidence intervals compare to each other? 

A certain facility produces drill bits which are made of either steel, cobalt, or diamond. Suppose that 75% of the drill bits are steel, 20% are cobalt, and 5% are diamond. Further, suppose that 10% of the steel drill bits fail, 5% of the cobalt drill bits fail, and 1% of the diamond drill bits fail. What is the probability that the drill bit is cobalt and fails?   

A manufacturing facility constructs airplanes with a mean of 50 tons and a variance of 400. What is the smallest probability that an airplane’s weight will be between 20 tons and 80 tons? Note that we are not assuming normality.  [Hint: Use Chebyshev’s theorem.]  

Which act explicitly prohibits insurance discrimination based on health status?

Which government entity is primarily responsible for medical licensing in your state?

Health care professionals typically have no legal obligations when performing tasks outside their scope of practice.