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For the probability function
x:
1
2
3
4
5
p(x):
.15
.2
.3
determine the mean, the variance, and the probability that the a value is less than the mean.
What is the probability that a trip will take more than an hour?- If a limousine has already been gone for 45 minutes, what is the probability that it will return within the next 20 minutes?
Define or give an example of a hypothetical construct. Explain why operational definitions are needed to define and to measure constructs.
can the value of the mean median or mode of a set of scores ever be negative?
Describe the overall shapes of these distributions.- How do the distributions differ?- Look carefully at the bar definitions. Where do these plots violate the rules for statistical graphs?
the following data represent the breaking strengths of samples of 20 gauge insulated copper wire from three different
A certain type of artificial heart has four independent, critical components. Failure of any of these components is a serious problem. What is the probability that an artificial heart functions for 5 years
Sort the data by units sold, high to low Sort the units sold using an icon set, where green corresponds to high sales levels, yellow to medium sales, and red to low sales. The sort should show all the green icons first, followed by yellow, and then..
A small town has a population of 20,000 people. Among these 1,000 regularly visit a popular local bar. A sample of 100 people who visit the bar is surveyed for their annual expenditures in the bar.
Revenue of Large Businesses A researcher estimates that the average revenue of the largest businesses in the United States is greater than $24 billion.
When a researcher has two samples with two means, one of the assumptions for two samples is independence of between the two samples. What does this mean? What happens if the independence assumption is violated?
suppose that the time to failure of a particular part in a system has an exponential distribution with expected time to
Find the product of the vector of state probabilities for the preceding period and the matrix of transition probabilities.
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