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Suppose that each week you buy a ticket in a lottery which gives you a chance of 1/100 of a win. You do this each week for a year. What is the chance that you get k wins during the year, approximately? Calculate as a decimal for k = 0, 1, 2.
let x be a discrete random variable that is uniform over the set of integers in the range ab where a and b are given
the average monthly electric bill of a random sample of 256 residents of a city is 90 with a standard deviation of
A sample of 8 jars has a mean of 15.6 ounces and a standard deviation of 0.3 ounce. Is there enough evidence to support the consumer's conjecture at a = 0.05 and how can this be graphed?
The effects of day care Does day care help low-income children stay in school and hold good jobs later in life? The Carolina Abecedarian Project.
In constructing 99% confidence intervals for proportions, over the long run, about what percentage of the time would each of the following happen?
A manufacturer constructs a 95% confidence interval for the mean weight of the items he manufactures.
What is the probability Alice gets done first? What is the expected amount of time until Alice and Betty are both done?
Is there any evidence to suggest that the proportion of adults who consider themselves physically inactive is greater in West Virginia than in Arizona? Use a = 0.001 and find the p value.
To find the velocity of a cart on a horizontal air track, a student mea-sures the distance d it travels and the time taken t as d = 5.10 ± 0.01 m.
For a given confidence interval, what is the interpretation of a 96% confidence level?
Explain whether the Hangover Symptoms Scale for each individual in this study is likely to be A valid measure of hangover severity.
researchers at the university of pennsylvania school of medicine have determined that children under 2 years old who
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