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Suppose there are 100 students in the class, and 10 of the students currently have the flu. Over the next week, 5 new students develop the flu. What is the prevalence of flu at the end of the week?
The Director of Emergency Medicine at Big Mountain Medical Services is studying patient waiting time. Waiting time is defined as the time from when a patient enters the facility until seen by a physician.
A customer wants delivery to be ensured between 10 am and 2 pm. Your truck leaves the factory at 4 am and time taken to reach the customer is normally distributed with an average of 8 hrs and a standard deviation of 1 hr.
xyz grocery a large regional supermarket chain employs over 9000 people. it has been claimed by the company that the
Conduct a test to determine whether blood lactate level (y) is linearly related to perceived recovery (x). Use α = .10.
What would you add to the current treatment plan? Why? Would you discontinue any of the currently prescribed medication? Why or why not?
Historical data suggests a standard deviation in the first sample of 10 and a standard deviation in the second sample of 16. Find a 95% confidence interval for the population difference.
Write the event "at least 2 misspelled words" in terms of random variable X. What is the probability of this event?
As part of an affirmative-action litigation. records were prod uced showing the average salaries earned by White, Black, and Hispanic workers in a large manufacturing planL Three different departments were selected at random for the comparison. The..
x1, x2, x3 are zero mean Gaussian random variables with STD=4. Let x1 and x2 be independent and x3= a*x1+b*x2. Find the constants “a” and “b” such that the correlation between x1 and x3 is 0.3. What is the correlation between x3 and x2?
Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables
Conduct a hypothesis test and What is the calculated t value? Are the mean test scores of these two groups significantly different at the .05 level - Conduct a hypothesis test.
seventy-eight percent of the light aircraft that disappear while in flight in a certain country are subsequently
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