The variances issue is easy as we can always assume they are
different as the test...
The variances issue is easy as we can always assume they are
different as the test is robust to accept any variances but the
dependent pairs is different. Why is it different and how might you
use it?
The acid-test ratio is another important ratio we can examine,
although it always does seek to measure liquidity within a
business. Overall, why do you think liquidity is such an important
area of consideration for a business?
Create two different data sets such that a T test under the
assumption of equal variances will reject the null hypothesis, but
the T test under the assumption of unequal variances (Hint: Welch's
T statistic) will fail to reject the null hypothesis. Explain why
the two data sets fail to reject under unequal variance assumption
and why it rejects until equal variance assumption.
Thanks
If we recognize that our perceptions are always limited, what
can we do to improve our perception making? How can we make our
perceptions less limited?
Ostensive definitions are problematic because they can always be
interpreted in a different way. True or False?
Wittgenstein criticizes the 'correspondence' view because it
requires that some things already have meaning prior to anything
being named. True or False?
Wittgenstein's later position is that there is no 'essence' with
regard to language. True or False?
Not Easy Being Indie
Tough time to be in the retail music business. That wasn't
always the case as chains such as Sam Goody's and Tower Records
competed for side by side with thousands of independent record
stores. Back in the day, one of the best independents was
Millennium Music in Charleston, South Carolina—perennially winning
awards for best CD store and best store staff. But things change.
Millennium Music owner Kent Wagner had done everything possible to
fight the changing...
3.2.4 Noise and Signals
It always seems easy to spot the big winners after they are
successful. It’s much harder in the early stages when there is less
information. And, there are many false signals that lead managers
astray.
DrawQuest
DrawQuest developed an app that created daily drawing challenges
for users. The app was immediately popular. In 2013, its first year
of operations, 1.4 million users downloaded the app and 400,000
used it at least once a month. DrawQuest’s storage...
Two standardized tests, test A and test B, use very different
scales. Assume that in one year the distribution of scores on test
A can be modeled by N(1000, 75) and scores on test B can be modeled
by N(27, 4). If an applicant to a university has taken test A and
scored 1220 and another student has taken test B and scored 39,
compare these students' scores using z-values. Which one has a
higher relative score? Explain.