BQA 2113 Exam 3 UPDATED ACTUAL
Exam Questions and CORRECT Answers
True or False: Since the binomial curve is discrete, its frequency distribution will never look like
a normal curve. - CORRECT ANSWER - false
In order to use the normal to approximate the binomial, μ +/- 3 std. dev. must - CORRECT
ANSWER - must be between 0 and n
The Normal Approximation to the Binomial can be used - CORRECT ANSWER - for any
probability binomial as long as n is large
The correction for continuity is used for - CORRECT ANSWER - correcting a discrete
distribution
μ is a - CORRECT ANSWER - parameter
s^2 is a - CORRECT ANSWER - statistic
A sampling distribution is NOT - CORRECT ANSWER - a collection of CLTs
True or False: A sampling distribution is a collection of a large number of samples - CORRECT
ANSWER - true
In general, when calculating a point estimator using samples, we - CORRECT ANSWER -
prefer unbiased estimates because they represent parameters
We interpret the standard error of the mean as - CORRECT ANSWER - standard deviation
of the sampling distribution of means
, The mean of the sampling distribution is - CORRECT ANSWER - equal to the population
mean
The standard error of the sampling distribution of means is - CORRECT ANSWER -
population standard deviation / square root of n
If a random sample is taken from a population that is normally distributed, the sample will be -
CORRECT ANSWER - distributed normally every time
Regardless of the population, if n is large, the sample distribution will be normal because of -
CORRECT ANSWER - Central Limit Theorem
The Central Limit Theorem is considered - CORRECT ANSWER - to be one of the most
important ideas in statistics
The CLT requires - CORRECT ANSWER - random, large samples
The target parameter we are interested in estimating in statistics is often - CORRECT
ANSWER - unknown
What could be a possible target parameter?
-s
-μ
- s^2
- x̄ - CORRECT ANSWER -μ
A point estimator is - CORRECT ANSWER - an estimate of the target parameter
True or False: The reliability of a point estimate is often found by obtaining the interval
estimator. - CORRECT ANSWER - true
Exam Questions and CORRECT Answers
True or False: Since the binomial curve is discrete, its frequency distribution will never look like
a normal curve. - CORRECT ANSWER - false
In order to use the normal to approximate the binomial, μ +/- 3 std. dev. must - CORRECT
ANSWER - must be between 0 and n
The Normal Approximation to the Binomial can be used - CORRECT ANSWER - for any
probability binomial as long as n is large
The correction for continuity is used for - CORRECT ANSWER - correcting a discrete
distribution
μ is a - CORRECT ANSWER - parameter
s^2 is a - CORRECT ANSWER - statistic
A sampling distribution is NOT - CORRECT ANSWER - a collection of CLTs
True or False: A sampling distribution is a collection of a large number of samples - CORRECT
ANSWER - true
In general, when calculating a point estimator using samples, we - CORRECT ANSWER -
prefer unbiased estimates because they represent parameters
We interpret the standard error of the mean as - CORRECT ANSWER - standard deviation
of the sampling distribution of means
, The mean of the sampling distribution is - CORRECT ANSWER - equal to the population
mean
The standard error of the sampling distribution of means is - CORRECT ANSWER -
population standard deviation / square root of n
If a random sample is taken from a population that is normally distributed, the sample will be -
CORRECT ANSWER - distributed normally every time
Regardless of the population, if n is large, the sample distribution will be normal because of -
CORRECT ANSWER - Central Limit Theorem
The Central Limit Theorem is considered - CORRECT ANSWER - to be one of the most
important ideas in statistics
The CLT requires - CORRECT ANSWER - random, large samples
The target parameter we are interested in estimating in statistics is often - CORRECT
ANSWER - unknown
What could be a possible target parameter?
-s
-μ
- s^2
- x̄ - CORRECT ANSWER -μ
A point estimator is - CORRECT ANSWER - an estimate of the target parameter
True or False: The reliability of a point estimate is often found by obtaining the interval
estimator. - CORRECT ANSWER - true
