Page | 1
BESC 3010 - TEST 2 Questions with
Detailed Verified Answers
Question: one reason that researchers nearly always gather data from
samples of participants instead of entire populations is because....
Ans: It can be impractical or even impossible to study populations
Question: 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?
Ans: 3
Question: 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...
Ans: Normally distributed
Question: 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...
Ans: The sampling distribution of means
, Page | 2
Question: 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....
Ans: Be normal
Question: The standard error is....
Ans: The standard deviation of the sampling distribution
Question: The distribution of all possible sample means (of a given size) is
called...
Ans: The sampling distribution of means
Question: 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?
Ans: 1
Question: 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?
Ans: -2
Question: 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?
, Page | 3
Ans: Normal
Question: 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?
Ans: 1.5
Question: If a person were to create a sampling distribution for sample
standard deviations, then the mean of that distribution would be equal to...
Ans: The standard deviation of the original distribution.
Question: 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?
Ans: 3
Question: A sampling distribution can be calculated for...
Ans: Any sample statistic
Question: What is the standard error of a distribution if σ= 20 and n = 25?
Ans: 4
Question: 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?
BESC 3010 - TEST 2 Questions with
Detailed Verified Answers
Question: one reason that researchers nearly always gather data from
samples of participants instead of entire populations is because....
Ans: It can be impractical or even impossible to study populations
Question: 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?
Ans: 3
Question: 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...
Ans: Normally distributed
Question: 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...
Ans: The sampling distribution of means
, Page | 2
Question: 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....
Ans: Be normal
Question: The standard error is....
Ans: The standard deviation of the sampling distribution
Question: The distribution of all possible sample means (of a given size) is
called...
Ans: The sampling distribution of means
Question: 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?
Ans: 1
Question: 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?
Ans: -2
Question: 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?
, Page | 3
Ans: Normal
Question: 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?
Ans: 1.5
Question: If a person were to create a sampling distribution for sample
standard deviations, then the mean of that distribution would be equal to...
Ans: The standard deviation of the original distribution.
Question: 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?
Ans: 3
Question: A sampling distribution can be calculated for...
Ans: Any sample statistic
Question: What is the standard error of a distribution if σ= 20 and n = 25?
Ans: 4
Question: 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?
