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Please apply the 3-sigma thinking to this problem.
Given f(x) = 0.1 for 10 ≤x≤20. The mean of the distribution is 15 and the standard deviation is 2.89. Find the probability that x falls between 12 and 15.
a breathalyser test is used by police in an area to determine whether a driver has an excess of alcohol in their blood.
Give an example of how you may use multiple regression to answer a question related to the impact of leadership change on employee attitudes scores, teambuilding training and performance outcomes.
(1 + Z)Z1 + 2ZXZZX + (1 + Z)Z = 0, in the region 0
A state-wide sample survey is to be made. First, the state is subdivided into counties. Seven counties are selected at random and further sampling is concentrated on these seven counties.
How much time and energy do you invest in making sure you aren't guilty of the fundamental attribution error or the self-serving bias?
The determinant coefficient (R2) and comment on the result. Predict the demand (y) when the budget for television advertising (x) equals 10.
the study obtained a measure to determine how comfortable the shopper was in a store. Higher scores indicated greater comfort. Suppose the following data were collected. Use a = .05 to test for differences among comfort levels for three types of b..
Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means?
the irs reported that 62 of individual tax returns were filed electronically in 2008. a random sample of 225 tax
What is a hypothesis test? Why do we need to use them to make decisions about relating sample results to the population; why can't we just make our decisions by the sample value?
At.02 significance level is it sensible to conclude that mean number of shoes sold at mall stores is larger than at outlet stores?
Find the sample size for the 95% confidence interval used to estimate the population proportion.
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