A manufacturer of nickel-hydrogen batteries randomly selected
100 nickel plates for test cells, cycled them a...
A manufacturer of nickel-hydrogen batteries randomly selected
100 nickel plates for test cells, cycled them a specified number of
times, and determined that 14 of the plates have blistered. Does
this provide compelling evidence for concluding that more than 10%
of all plates blister under such circumstances? State and test the
appropriate hypotheses using a significance level of .05. Please
use a full 4-part hypothesis test: Hypotheses, check assumptions,
calculations and conclusion. Please show your R code that gives you...
Use the following information to answer the following
two questions. Many studies have investigated the question...
Use the following information to answer the following
two questions. Many studies have investigated the question of
whether people tend to think of an odd number when they are asked
to think of a single-digit number (0 through 9). Combining results
from several studies, Kubovy and Psotka (1976) used a sample size
of 1,770 people, of whom 741 thought of an even number and 1,029
thought of an odd number. Consider investigating whether these data
provide strong evidence that people...
You might think that if you looked at the first digit in
randomly selected numbers that...
You might think that if you looked at the first digit in
randomly selected numbers that the distribution would be uniform.
Actually, it is not! Simon Newcomb and later Frank Benford both
discovered that the digits occur according to the following
distribution: (digit, probability)
(1,0.301),(2,0.176),(3,0.125),(4,0.097),(5,0.079),(6,0.067),(7,0.058),(8,0.051),(9,0.046)(1,0.301),(2,0.176),(3,0.125),(4,0.097),(5,0.079),(6,0.067),(7,0.058),(8,0.051),(9,0.046)
The IRS currently uses Benford's Law to detect fraudulent
tax data. Suppose you work for the IRS and are investigating an
individual suspected of embezzling. The first digit of 145 checks
to a supposed company...
ou might think that if you looked at the first digit in randomly
selected numbers that...
ou might think that if you looked at the first digit in randomly
selected numbers that the distribution would be uniform. Actually,
it is not! Simon Newcomb and later Frank Benford both discovered
that the digits occur according to the following distribution:
(digit, probability)
(1,0.301),(2,0.176),(3,0.125),(4,0.097),(5,0.079),(6,0.067),(7,0.058),(8,0.051),(9,0.046)(1,0.301),(2,0.176),(3,0.125),(4,0.097),(5,0.079),(6,0.067),(7,0.058),(8,0.051),(9,0.046)
The IRS currently uses Benford's Law to detect fraudulent tax data.
Suppose you work for the IRS and are investigating an individual
suspected of embezzling. The first digit of 166 checks to a
supposed company...