The coefficient of skewness is the standard deviation divided by the mean. -
ANSWERS-False
If there are "m" ways of doing one thing, and "n" ways of doing another thing, the
multiplication formula states that there are (m) × (n) ways of doing both. -
ANSWERS-True
The probability of rolling a 3 or 2 on a single die is an example of mutually
exclusive events. - ANSWERS-True
An illustration of an experiment is turning the ignition key of an automobile as it
comes off the assembly line to determine whether or not the engine will start. -
ANSWERS-True
To apply the special rule of addition, the events must be mutually exclusive. -
ANSWERS-True
If two events are mutually exclusive, then P(A and B) = P(A)P(B). - ANSWERS-False
The probability of rolling a 3 or 2 on a single die is an example of conditional
probability. - ANSWERS-False
,A coin is tossed four times. The joint probability that all four tosses will result in a
head is ¼ or 0.25. - ANSWERS-False
A combination of a set of objects is defined by the order of the objects. -
ANSWERS-False
An individual can assign a subjective probability to an event based on the
individual's knowledge about the event. - ANSWERS-True
The joint probability of two independent events, A and B, is computed as P(A and
B) = P(A) P(B). - ANSWERS-True
A random variable represents the outcome of an experiment. - ANSWERS-True
The mean of a probability distribution is called its expected value. - ANSWERS-
True
To construct a binomial probability distribution, the mean must be known. -
ANSWERS-False
A probability distribution is a mutually exclusive and collectively exhaustive listing
of experimental outcomes that can occur by chance, and their corresponding
probabilities. - ANSWERS-True
,The mean of a binomial distribution is the product of n and π. - ANSWERS-True
The number of different standard normal distributions is unlimited. - ANSWERS-
False
The main purpose of descriptive statistics is to - ANSWERS-Summarize data in a
useful and informative manner
Which word is NOT part of the definition of descriptive statistics? - ANSWERS-
Predicting
A marketing class of 50 students evaluated the instructor using the following
scale: superior, good, average, poor, and inferior. The descriptive summary
showed the following survey results: 2% superior, 8% good, 45% average, 45%
poor, and 0% inferior. - ANSWERS-c. Most students rated the instructor as poor or
average.
What type of variable is the number of robberies reported in your city? -
ANSWERS-Quantitative
The Nielsen Ratings break down the number of people watching a particular
television show by age. What level of measurement is age? - ANSWERS-Ratio
, What level of measurement is a person's "favorite sport"? - ANSWERS-Nominal
The final rankings of the top 20 NCAA college basketball teams are an example of
which level of measurement? - ANSWERS-Ordinal
What level of measurement is the Centigrade temperature scale? - ANSWERS-
Interval
A survey includes a question regarding marital status that has the following
responses: single, married, divorced, separated, or widowed. What is the scale of
measurement for this question? - ANSWERS-Nominal
A group of women tried five brands of fingernail polish and ranked them
according to preference. What level of measurement is this? - ANSWERS-Ordinal
Shoe style is an example of what level of measurement? - ANSWERS-Nominal
When TV advertisements report "2 out of 3 dentists surveyed indicated they
would recommend Brand X toothpaste to their patients," an informed consumer
may question the conclusion because the: - ANSWERS-Advertisement does not
include the total number of dentists surveyed
A sample of the paramedical fees charged by clinics revealed these amounts: $55,
$49, $50, $45, $52, and $55. What is the median charge? - ANSWERS-51.00
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Teacher101. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.