RES
341 Research And Evaluation I
FINAL EXAM (Set 1)
1.
Unstructured interviews are best used for
2.
A recent study
of breast cancer revealed that 13% of the women in the sample used antibiotics
more than 500 days in their lifetime. Further, 79% of these “heavy antibiotics
users” developed breast cancer. According to the American Cancer Society, one
in twelve women will develop breast cancer at some time in her life. Of the
numbers mentioned, which are parameters?
3.
Basic business
research methods would be used to
4.
The collection
and summarization of the socioeconomic and physical characteristics of the
employees of a particular firm is an example of
5.
Which of the
following is an example of statistical inference?
6.
A logically
conjectured statement that describes the relationship between two or more
variables and is formulated for empirical testing is a
7.
The variable
that causes a measurable effect or change on the dependent variable is
8.
Survey
questionnaires may be effectively used for research to determine
9.
A company is
designing a survey to obtain information on the reliability of a product it
sells. To obtain the most valid research information, who should the company send
this type of survey to?
10.
The following
practice is considered ethical when conducting business research:
11.
If a
population distribution is skewed to the right, then given a random sample from
that population, one would expect that the
Textbook Price Number
of Textbooks
$25 to $35 2
$35 to $45 16
$45 to $55 5
$55 to $65 7
$65 to $75 20
12.
Estimate the
standard deviation of the price of a textbook.
Textbook Price Number
of Textbooks
$25 to $34.99 2
$35 to $44.99 16
$45 to $54.99 5
$55 to $64.99 7
$65 to $74.99 20
13.
Estimate the
mean price of a textbook.
14.
A supermarket
has determined that daily demand for eggs has a bell-shaped distribution, with
a mean of 55 cartons and a standard deviation of six cartons. If the
supermarket begins each morning with a stock of 61 cartons of eggs,
approximately what percentage of days will there be a surplus of eggs?
15.
Which of these
measurement scales has a rank order associated with its use?
16.
Identify the
scale that has no meaningful zero.
17.
__________ is
a measure of the chance that an uncertain event will occur.
18.
The
Information Commons in the main library has 150 personal computers. The
probability that any of them will require repair on a given day is 0.02. To
find the probability that 25 of the computers will require repair, one would
use what type of probability distribution?
19.
A
multiple-choice test has 20 questions. There are four choices for each
question. A student comes to class with four different colored balls of
identical shape and size in her pocket. She has decided to draw one ball from
her pocket per question and allow the color of the ball to select the answer
for each question. What type of probability distribution can be used to figure
out her chance of getting 10 questions right?
20.
Which of the
following cannot generate a Poisson distribution?
21.
Which of the
following is a characteristic of every binomial distribution?
22.
The average
qualifying speed for a championship NASCAR® race is 145.65 mph and the standard
deviation is 9.45 mph. Only drivers who obtain z-scores greater than 1.2 will
qualify for the race. If the speeds are normally distributed, what minimum
speed must be clocked to compete for the trophy?
23.
Trudy Jones
recently completed her certification examination and learned that her z-score
was -2.5. The examining board also informed her that a failure to pass would
equal all scores that were one or more standard deviations below the mean and
that those with scores higher than two standard deviations above the mean would
receive a special commendation award. Trudy can conclude that she
24.
The use of the
student’s distribution requires which of the following assumptions?
25.
The standard
error of the sample mean is equal to 5 when n=25. If the sample size increases
by a factor of four, how will the standard error change?
26.
For a sample
size of 1, the sampling distribution of the mean will be normally distributed
27.
A 95%
confidence interval for the population mean indicates that
28.
A random
sample of 16 ATM transactions at the First National Bank of Flintrock revealed
a mean transaction time of 2.8 minutes with a standard deviation of 1.2
minutes. The width, in minutes, of the 95% confidence interval for the true
mean transaction time is
29.
All other
things being equal, which is narrower, a 95% confidence interval with n=100 or
a 99% confidence interval with n=30?
30.
When the only
sources of variation in a production process are caused by chance, the process
is said to be
