Question

The standard error of a statistic describes [Select the
correct answers - There may be more than one correct answer.
Negative marking will apply for incorrect selections.]

(a) The standard deviation of the sampling distribution of
that statistic.

(b) The standard deviation of the sample data.

(c) How close that statistic is likely to fall to the
parameter that it estimates.

(d) The variability in the values of the statistic for
repeated random samples of size

n.

(e) The error that occurs due to nonresponse and measurement
errors.

can you explain with an example

Answer #1

The Central Limit Theorem implies that [Select the correct
answers - There may be more than one correct answer. Negative
marking will apply for incorrect selections.]
(a) All variables have bell-shaped sample data distributions
if a random sample con- tains at least about 30 observations.
(b) Population distributions are normal whenever the
population size is large.
(c) For large random samples, the sampling distribution of y ̄
is approximately normal, regardless of the shape of the population
distribution.
(d) The...

Select the correct definition of the sampling error from the
choices below.:
errors that result from having a poor experimental design
the difference between the true population parameter and the
sample statistic
errors that are the result of using a biased sample
the systematic errors that occur during data collection and
analysis
the standard deviation of the sampling distribution

Which of the following statements are TRUE?
Note that there may be more than one correct answer; select all
that are true.
1. a) All else being equal, the standard deviation of the
sampling distribution of the sample mean will be smaller for n = 10
than for n = 40.
b) The value of a statistic does not vary from sample to
sample.
c) Statistics have sampling distributions.
d) The value of a parameter does not vary from sample...

From previous studies, it has been generally believed that
Northern Hemisphere icebergs have a mean depth of 270 meters. An
environmentalist has suggested that global warming has caused
icebergs to have greater depth. A team of scientists visiting the
Northern Hemisphere observed a random sample of 41 icebergs. The
depth of the base of the iceberg below the surface was carefully
measured for each. The sample mean and standard deviation were
calculated to be 276 meters and 20 meters respectively....

From previous studies, it has been generally believed that
Northern Hemisphere icebergs have a mean depth of 270 meters. An
environmentalist has suggested that global warming has caused
icebergs to have greater depth. A team of scientists visiting the
Northern Hemisphere observed a random sample of 41 icebergs. The
depth of the base of the iceberg below the surface was carefully
measured for each. The sample mean and standard deviation were
calculated to be 276 meters and 20 meters respectively....

MATHEMATICS
1. The measure of location which is the most likely to
be
influenced by extreme values in the data set is the a. range
b.
median c. mode d. mean
2. If two events are independent, then a. they must be
mutually
exclusive b. the sum of their probabilities must be equal to one
c.
their intersection must be zero d. None of these alternatives
is
correct. any value between 0 to 1
3. Two events, A and B,...

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