Title: QNT 275 Your dreams our mission / snaptutorial.com
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QNT 275 Week 2 Homework Problem Set Excel
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1. In a hearing test, subjects estimate the
loudness (in decibels) of a sound, and the
results are 69, 67, 71, 72, 65, 75, 68, 68, 83,
73, 68. Calculate the measures of central
tendency (Mean, median, mode) and the measures of
dispersion (range, standard deviation, variance).
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QNT 275 Week 3 Homework Problem Set Excel
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1. A survey is made in a neighborhood of 90
voters. 75 are Democrats and 15 are Republicans.
Of the Democrats, 30 are women, while 7 of the
Republicans are women. If one subject from the
group is randomly selected, find the probability
the
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QNT 275 Week 4 Homework Problem Set Excel
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1. A sample of 100 items has a population
standard deviation of 5.9 and a mean of 32.
Construct a 95 percent confidence interval for
µ.
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