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The average age of doctors in a certain hospital is 49.0 years old. suppose the distribution of ages is normal and has a standard deviation of 8.0 years. if 9 doctors are chosen at random for a committee, find the probability that the average age of those doctors is less than 49.8 years. Assume that the variable is normally distributed.
Find the 95% prediction interval for the heart rate reduction expected for an individual receiving a dose of 2.00 mg
If circuit switching is utilized, how many user can this access link support?
To find out the estimate of between and within treatments.Samples were selected from 3 populations. The data obtained follow.
compute profit diagrams for the following ratio spreadsa buy 950-strike call sell two 1050-strike callsb buy two
In 1851 there were 25,466 nurses in Great Britain. Find the probability that a British nurse selected at random in 1851 would be 60 years or older. (My guess is The sum of the percent of nurses 60 years are older are added equaling 36% or 1967.76/2..
If the population standard deviation is $7, and a random sample of 50 properties is chosen, what is the probability that the sample average will be below $35?
parts manufactured by an injection molding process are subjected to a compressive strength test. twenty samples of
The probability of recovery for a certain disease is 0.65 or 65%. If 50 people are stricken, what is the probability that
1.ten years ago a study at a large midwestern university found that 18 of the students at the university were very
What is the probability that the wait for the second student will be 15 minutes or less (to 4 decimals)? What is the probability that the wait for the second student will be between 15 and 45 minutes (to 4 decimals)?
Test whether race and NATFAE are independent (α = 0.05). What do you conclude?
A small town has a population of 20,000 people. Among these, 1,000 regularly visit a popular local bar. A sample of 100 people who visit the bar is surveyed for their annual expenditures in the bar.
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