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A drunkard takes a step North, South, East, or West with probability 1/4. Assuming that one step is 3 feet and the drunkard takes a step every second, what is the probability that he will stay within the circle of radius 100 feet after one hour? Use the Central Limit Theorem to solve
A wine taster claims that she can distinguish four vintages of a particular Cabernet. What is the probability that she can do this by merely guessing?
a medical test for a certain disease is known to have sensitivity 98 probability of giving positive result to a
determine if this statistical study is descriptive or inferentiala study finds that the median household income in the
1. State the null and alternative hypotheses via both an explanation and a math equation.
A study finds that during blizzards, online sales are highly associated with the number of snow plows on the road; the more plows, the more online purchases. The director of an association of online merchants suggests that the organization should ..
Suggest some improvements to the design.- Why might the shoe manufacturer not be able to generalize the results they find to all runners?
The times are shown here. At the 0.05 level, do the seat designs differ significantly in terms of the time that patrons stay? Using the appropriate statistical table, what is the most accurate statement we can make about the p-value for the test?
If Long Life does not want to make refunds for more than 10% of its batteries under the full-refund guarantee policy, for how long should the company guarantee
The data consists of random sample of 30 households from the 2007 American Community Survey. Construct a frequency distribution and a histogram for each data set.
Coin Flips Imagine flipping a fair coin many times. Explain what should happen to the proportion of heads as the number of coin flips increases.
An appliance manufacturer produces two models of microwave ovens: the super nuker and the Micro-1000. Both models require fabrication and assembly work. The super nuker requires 4 hours of fabrication and 2 hours of assembly. The Micro-1000 requ..
What percentage of the overall sample usually gets A's and B's in school and also uses sunscreen always or most times when going out in the sun for more than.
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