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Wegesin and Stern (2004) found greater consistency (less variability) in the memory performance scores for younger women than for older women. The following data represent memory scores obtained for two women, one older and one younger, over a series of memory trials.
a. Calculate the variance of the scores for each woman.
b. Are the scores for the younger woman more consistent (less variable)? Younger Older 8 7 6 5 6 8 7 5 8 7 7 6 8 8 8 5
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1. Is the following data set at the nominal, ordinal, interval, or ratio level of measurement?
A lintel consists of two 8-in.-by- 1 2 -in. steel plates welded together to form an inverted tee. Calculate the maximum bending stresses in tension.
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