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Use a ratio for adult gamers versus teen gamers. Refer to the previous exercise. In many settings, researchers prefer to communicate the comparison of two proportions with a ratio.
For gamers who play on consoles, they would report that teens are 1.65 (89/54) times more likely to play on consoles. Use the bootstrap to give a 95% confidence interval for this ratio.
The insurance premium is $400 times one's probability of causing an accident in the following year. A new subscriber has an accident during the first year. What should be his insurance premium for the next year?
It is known that song length is not normally distributed. Suppose a sample of 25 songs is taken from the population. What is the approximate probability that the average song length will last more than 5.25 minutes? Round to the nearest thousandth..
Some studies suggest a beta-carotene intake over 3000 mcg may protect against ?macular degeneration. What percentage of people has a dietary beta-carotene intake of at least ?3000 mcg?
A mean of 22 miles-per-gallon and a standard deviation of 5 miles-per-gallon. What is the probability that a car will get less than 21 miles-per-gallon.
How does Z the standard normal distribution variable relate to the standard deviation of its distribution and identify the critical value suitable for conducting a two-tail test of the hypothesis at the 2% level.
Describe a 5-step hypothesis test for two variances for a particular claim related to your work or life environment. You need to state the claim,
Below is the data set for the amount of trash by ten households (in pounds per day). Assume the population is normally distributed
Determine whether the following definitions are stipulative, lexical, precising, theoretical, or persuasive.- "Radioactive area" means, for purposes of the U.S. Nuclear Regulatory Commission.
The weekly demand for a product follows a normal curve with an average of 1000 units and a standard deviation of 200 units. In how many weeks during a typical 52-week year would be above 800 units?
Four of calculators are selected to be sent to local high school. How many selections can be made using original shipment?
Need to get quiz done online goodness of fit and test for independence need to get over 80%
Both objective and subjective criteria should be used to determine whether a process is in control. Do you agree or disagree?
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