Question

Select True or False from each pull-down menu, depending on whether the corresponding statement is true or false.

True False
**1.** A nonsampling error may be caused
by the wording of a questionnaire.

True False
**2.** The difference between a sample
mean and the corresponding population mean is called a sampling
error.

True False
**3.** Multiple choice questionnaire
design allows the respondent to freely formulate his or her own
answer and expand on the subject of the question.

True False
**4.** A marketing research firm divides
the population of a state into geographic regions, and randomly
selects some of the regions and takes a simple random sample of
each selected area. This is a cluster sampling.

Answer #1

**1.** A nonsampling error may be caused by the
wording of a questionnaire.

True

**2.** The difference between a sample mean and the
corresponding population mean is called a sampling error.

True

**3.** Multiple choice questionnaire
design allows the respondent to freely formulate his or her own
answer and expand on the subject of the question.

False

**4.** A marketing research firm
divides the population of a state into geographic regions, and
randomly selects some of the regions and takes a simple random
sample of each selected area. This is a cluster sampling.

False

Select True or False from each pull-down menu, depending on
whether the corresponding statement is true or false.
True False
1. In the normal distribution, the
total area beneath the curve represents the probability for all
possible outcomes for a given event.
True False
2. In the normal distribution, the
mean, median, mode, and variance are all at the same position on
the horizontal axis since the distribution is symmetric.
True False
3. In the exponential distribution,
the value of ?x...

Select True or False from each pull-down menu, depending on
whether the corresponding statement is true or false.
? True False 1.
Conditional probability is the probability that an event will
occur, given that another event could also occur.
? True False 2.
Marginal probability is the probability that a given event will
occur, with no other events taken into consideration.
? True False 3.
The outcome of a game of roulette based on historical data is not
an example of the relative frequency approach to...

State whether each of the following is True or
False.
a. A smaller sample could provide less sampling error than a larger
sample from a given population.
b. The correct critical value a lower tail hypothesis test when
sigma is unknown, the sample size = 15, and alpha = 0.05 is
-1.645.
c. A larger sample size can reduce the potential for extreme
sampling error.
d. It is impossible for the population mean to equal the mean of a
sample...

1) Determine whether the statements are true/ false.
a. T F
The probability of making a type II error is related to
the power of a statistical test
b. T
F When I compare
two estimates of the mean, the one with a smaller standard error
has
less precision
c. T F
If I do
cluster sampling, the sample mean is always within the 95%
confidence interval.
d. T
F
If I do simple random sampling, the true...

For each of the following statements, identify whether the
statement is true or false, and explain why. Please limit each
response to no more than 2 sentences.
f) A weighted mean is preferred over an unweighted mean (i.e. a
regular sample mean) when each observation has its own unique
weight.
g) A z-score is a percentile.
h) Assuming the population is normally distributed, the standard
deviation of the sampling distribution of the sample mean will
always be less than or...

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