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1. Why would a researcher have more than two levels of the independent variable in an experiment?
2. What is a factorial design? Why would a researcher use a factorial design?
3. What are main effects in a factorial design? What is an interaction?
what theorem states that a distribution of sample means is approximately normally distributed if the sample size is
Should Mark use the study? Why? What is the maximum amount Mark should be willing to pay for this study? What is the maximum amount he should pay for any study?
a market research survey is available for 10000. using a decision tree analysis it is found that the expected monetary
For your function what is the instantaneous rate of change in maximum error-free channel capacity with respect to SNR, for SNR=30? What is the equation of the tangent line to the graph of C(SNR), when SNR=30?
Suppose you have developed a regression model to explain the relationship between y and x1, x2, and x3. The ranges of the variables you observed were as follows: 10 y 100, 5 x1 55, .5 x2 1, and 1,000 x3 2,000. Will the error of prediction be smal..
todays local newspaper lists 22 stocks of local interest. of theses stocks eleven increase five decreased and six
Seven students have applied for merit scholarships. This year 3 merit scholarships were awarded. If a random sample of 3 aplications (from the population of 7) is selected,
question 1 an accelerated life test on a large number of batteries revealed that the mean life for a particular use
eBay selling prices: For eBay auctions of the iPad2 64GB 3G Wi-Fi units, a sample was taken in July 2011 where the Buy-it-Now prices were (in dollars): Find the standard deviation of the data and the standard error of the sample mean, Interpret
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
Using the critical value approach and the sample information reported below, carry out a test of this statement. Let α = 0.05.
Justifying your choice adequately but succinctly, postulate an appropriate theoretical probability model for this random variable. Using the result obtained in
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