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Several years ago the mean age of an inmate on death-row was 39.3. To check and see if the mean age of an inmate on death-row has changed, we randomly selected 41 death-row inmates and found that the mean age is 37.5 with a standard deviation of 9.8. How do I construct a 99% confidence interval about the mean age and what does that interval imply?
If the researchers test 95- newborns for the presence of this gene, would it be unlikely for them to find fewer than 25 children with the gene?
A producer of pleasure boats wants to maximize revenue during the next month. Two types of boats are sold, x1 and x2. Type x1 sells for $40,000 and type x2 sells for $30,000.
What controls or supports are used & given by venture capital firms to help ensure the company's success?
Use the normal approximation to estimate the probability of at least one disaster in 25 missions.
Perform a hypothesis test at the 5% significance level to determine whether the survey participants are a representative sample of the USA obese population.
carry out the steps in constructing a confidence interval for a population proportion define the parameter check
Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.3 miles per gallon.?
1. If an actuator has slow or erratic motion, name five possible causes. 2. Give six reasons for the overheating of the fluid in a hydraulic system.
Arrange these data on an appropriate table, and discuss the association between mortality rate and the use of carbolic acid.
What is the centered moving average that would correspond to Quarter 2 in 2006? If we exponentially smooth the data with the a smoothing constant of 0.1, the smoothed value for Quarter 3 in 2004 would be?
You wish to test the claim that µ = 800 at a level of significance of a = 0.05 and are given sample statistics = 810.
Translate the following arguments into symbolic form.- Vitamin E is an antioxidant and a useless food supplement if and only if it does not reduce heart disease.
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