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Core samples taken from ocean floors are at times analyzed for plankton content in order to infer approximate climatological conditions which existed on earth. Since many species coexist at different times (core depths), their abundance is generally correlated, and a factor analysis is frequently performed on such data. Table 7.15, represents an excerpt of data given by Imbrie and Kipp (1971) for n = 110 core depths of a single core, where each depth represents 10cm and where only p = 10 plankton species are considered,
(a) Carry out a principal component analysis of the p = 10 species, plotting component scores for the dominant component.
(b) Rotate the loadings and scores using the varimax rotation. Is there a change in the interpretation?
(c) Repeat parts a and h using a maximum likelihood factor model.
they are known as trend surface analyses-see, for example, Harbaugh and Demirmen (1964) and Cameron (1968).
sam will read either one chapter of his probability book or one chapter of his history book. if the number of
The 50 members of the placebo group had blood pressure lowered by an average of 15 points with standard deviation 8 points. To analyze this information we will use a, When testing whether or not the increases in spending are different, the test is ..
Calculate a 90% CI for the population proportion of Americans who believe there is intelligent life on other planets.
An automobile insurance company estimates the following loss probabilities for the next year on a $25,000 sports car:
Assume that the process is in control and that the population of all jar fills is normally distributed. (Round the z-values to 2 decimal places and final answer to 4 decimal places. Negative amounts should be indicated by a minus sign.)
1. Two numbers are seleeted at random from te interval (0, I ). If these values are uniformly and independently distributed, compute the prob ability that the three resulting line segments, by cutting the interval at the numbers, can..
a survey of an urban university population of 25450 showed that 870 of 1100 students sampled supported a fee increase
question without writing them all out what is the number of subsets of set a tongue ear mouth eye nose cheek forehead
Calculate probability that the sample would have a mean:
a process is said to be of six-sigma quality if the process mean is at least six standard deviations from the nearest
Construct a tornado diagram for this problem. On the basis of the tornado diagram, advise your friend regarding either (1) whether to invest or (2) what to do next in the analysis.
question a political party suspects there are differences in presidential candidate preferences based on age. a
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