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BESC 3010 - TEST 2 Answered Correctly!!!
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BESC 3010 - TEST 2 AnsweredCorrectly!!!
one reason that researchers nearly always gather data from samples of participants
instead of entire populations is because.... CORRECT ANSWERS It can be impractical
or even impossible to study populations
If a test has a population mean of 70 and standard deviation of 6, then what is the z-
score for a sample of n = 9 with a mean of 76? CORRECT ANSWERS 3
The central limit theorem says that when all possible samples of a sufficient size are
taken from a population and their means are charted, the distribution of means will be...
CORRECT ANSWERS Normally distributed
The distribution of all possible samples of a given size (e.g., n=54 or n=117) are taken
from a population and their means are charted, that distribution is known as...
CORRECT ANSWERS The sampling distribution of means
If a distribution of raw scores has a strong negative skew, then, given sufficiently large
n, the sampling distribution of means for that distribution will.... CORRECT ANSWERS
Be normal
The standard error is.... CORRECT ANSWERS The standard deviation of the sampling
distribution
The distribution of all possible sample means (of a given size) is called... CORRECT
ANSWERS The sampling distribution of means
If a distribution has a mean of 100 and a standard deviation of 15, then what is the
standard error for a sample of 225 scores? CORRECT ANSWERS 1
If a distribution has a mean of 30 and a standard deviation of 3, then what is the z-score
for a sample of 4 scores with a mean of 27? CORRECT ANSWERS -2
The Central Limit Theorem states that the shape of a sampling distribution becomes
closer to what shape as the number of sample means in the distribution increases?
CORRECT ANSWERS Normal
If the population mean for a distribution is 150 and the standard deviation is 20, then
what is the z-score for a sample of 100 people with an average score of 153?
CORRECT ANSWERS 1.5
, If a person were to create a sampling distribution for sample standard deviations, then
the mean of that distribution would be equal to... CORRECT ANSWERS The standard
deviation of the original distribution.
If a population has a mean of 40 and a standard deviation of 8, what would the z-score
be for a sample of 16 people with a mean of 46? CORRECT ANSWERS 3
A sampling distribution can be calculated for... CORRECT ANSWERS Any sample
statistic
What is the standard error of a distribution if σ= 20 and n = 25? CORRECT ANSWERS
4
If a population has a mean of 60 and a standard deviation of 15, what is the z-score for
a sample of 9 people with an average of 55? CORRECT ANSWERS -1
As the size of samples (n) in a sampling distribution increases, the shape of that
distribution becomes more... CORRECT ANSWERS Normal
What is the z-score for a sample with n = 100 and M = 103 if the population parameters
are μ=100 and σ=10? CORRECT ANSWERS +3
What is the standard error for a distribution with σ= 40 when n = 4? CORRECT
ANSWERS 20
If a distribution of raw scores has a strong positive skew, then, given a sufficiently large
n, the mean of the sampling distribution will be equal to the _____ of the raw score
distribution. CORRECT ANSWERS Mean
One reason that researchers nearly always gather data from samples of participants
instead of populations is because.. CORRECT ANSWERS It is easier to gather data
from samples than populations
According to the Central Limit Theorem, if a research takes sufficiently large samples
(e.g., n > 30) from a bimodal distribution, then the resulting sampling distribution will
be... CORRECT ANSWERS Unimodal
The distribution of all possible sample variances (of a given sample size) is called...
CORRECT ANSWERS The sampling distribution of variances.
The distribution of all possible sample variances - if n is sufficiently large (e.g., n > 30) -
will be... CORRECT ANSWERS Mesokurtic
The standard error of a sampling distribution is a function of two things: CORRECT
ANSWERS The population standard deviation and the sample size
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