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Confidence intervals (CI) are one of the simpler forms of inferential statistics. What does the CI represent? And why does our knowledge of the Central Limit Theorem (CLT) and the empirical rule let us understand why the CI works and the results can usually be trusted.
the following sample of heights was taken from 7 cans off the assembly line12.9 12.9 12.8 12.9 13.4 13.2 12.6build a 90
an online site presented this question would the recent norovirus outbreak deter you from taking a cruise? among the
a. Use software to access the student survey data, and report the mean hours of sleep for on-campus and for offcampus students.
You are given following information on residents' responses, broken down by sex. Determine the probability that resident is a man and opposes the bridge?
a computer laboratory manager was in charge of purchasing new battery packs for her lab of laptop computers. she
Suppose a soft drink company want to perform a taste test on 5 brands of diet cola. How many permutations are there for presenting 5 diet colas to test subjects
a bank manager wishes to provide prompt service for customers at the banks drive-up window. the bank currently can
A person is selected randomly from the sample summarized in the table. We want to determine the probability that the person is a moderate Republican.
I conduct an experiment doing fixed-level testing with ε = .05; I know that for a given set of alternatives my power will be .85. True or False ?
score-s-up is a company that helps students improve their test scores on college entrance exams. they advertise that
From Data Set 1, for a first age at marriage of 33.44, the proportion of area beyond the z-score associated with this age is 0.05.
1.a noted psychic was tested for esp. the psychic was presented with 400 cards face down and asked to determine if each
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