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Math statistic
In confidence intervals, we deal with a value called "alpha.' what is the meaning of this value? How is it related to our confidence value?
What does it mean if we have an alpha value of 0.05? How about if we have an alpha value of 0.10? Is this value set for us or do we as researchers choose it ourselves? If we do choose it, what criteria do we use? answer the questions and show all the steps
What is the predicted blood pressure for an average 17 year old as estimated from the regression line? And the standard error of the estimate for a 17year old ?
An investor is trying to decide whether to invest in a given stock, but is worried about the volatility of the investment. If the investor is very certain that the volatility (as measured by the standard deviation)
Construct a 95% confidence interval for the unknown mean of the pop ulation from which the above sample was obtained. Construct an interval that with 95% confidence will contain 99% of the population values.
Find the probability of winning jackpot?
Your answers must be presented in task number order and be clearly labelled with the appropriate task number. Answers to each task must start on a new page.
The table below lists deaths in Georgia in 2004, the estimated population of Georgia in 1994 and the U.S. population according to the 2000 census. Calculations should be done by hand, but feel free to use software to check your work.
Estimate the Mean, Median, Range, Standard Deviation and Coefficient of Variation and calculate the 25th, 50th, and 75th percentile of the first year data on advertising costs.
a coefficient of determination of 0.9 shows that 10 of variation in the dependent variable is caused by change in the
Imagine if you were researching sales techniques directed at vulnerable or unaware populations with regard to the sale or promotion of new pop alcohol drinks that emphasized the pop ignoring the alcohol, or of products and magazines relating to de..
1. (a) Find the moment-generating function for a gamma probability distribution with parameter α > 0 and β > 0. [Hint: In the integral representation of E(etX), change the variable t to u = (1 - βt)x/β, with (1 - βt) > 0.] (b) Using the mgf of a ..
Costs of Televisions Listed below are prices (in dollars) and quality rating scores of rare-projection televisions (based on data from Consumer Reports). All of the televisions have screen sizes of 55 in or 56 in.
containers arrive at a stocking station on a conveyor at the rate of five per minute. container weight is 25 kg.
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