IEE 380 FINAL EXAM COMPREHENSIVE STUDY
GUIDE WITH SOLUTIONS
◉ An experiment that is repeated in the same manner every time
but that can result in different outcomes is called a _______________
experiment.
Answer: random
◉ what are the random variables
Answer: xbar, S, S^2
◉ What letter is used to denote the number of observations in a
sample?
Answer: n
◉ S^2 is the ___________________ variance.
Answer: sample
◉ According to the text's notation, a residual is the difference
between the __________ response and the model-predicted response.
Answer: actual
,◉ β0hat is the estimate of the ___________ in a simple linear regression
model
Answer: intercept
◉ ********
We want to do a hypothesis test on the difference between two
population means and we do not know the population variances. We
do a test of hypothesis on the equality of variances and determine
that we have evidence that the variances, though unknown, are
equal. How many degrees of freedom will our test statistic have?
Answer: not n-1
◉ **************
How many values can a Poisson random variable have?
Answer: not 2
◉ *******A completely randomized experiment has n _______________
for each treatment.
Answer: not treatments
◉ The coefficient of determination is a measure of the __________ of
variability that can be accounted for by the model.
Answer: fraction
, ◉ Regarding hypothesis testing, alpha is the probability of Type I
error.
Answer: true
◉ *******
We want to do a hypothesis test on the difference between two
population means and we are told the population standard deviation
values for each population. Which test statistic do we use?
Answer: not p0
◉ The standard error of the sample mean is sigma/sqrt(n)
Answer: true
◉ ********
The number of items in a population _______________.
Answer: not is always finite
◉ An experiment that is repeated in the same manner every time
but that can result in different ____________ is called a random
experiment.
Answer: outcomes
GUIDE WITH SOLUTIONS
◉ An experiment that is repeated in the same manner every time
but that can result in different outcomes is called a _______________
experiment.
Answer: random
◉ what are the random variables
Answer: xbar, S, S^2
◉ What letter is used to denote the number of observations in a
sample?
Answer: n
◉ S^2 is the ___________________ variance.
Answer: sample
◉ According to the text's notation, a residual is the difference
between the __________ response and the model-predicted response.
Answer: actual
,◉ β0hat is the estimate of the ___________ in a simple linear regression
model
Answer: intercept
◉ ********
We want to do a hypothesis test on the difference between two
population means and we do not know the population variances. We
do a test of hypothesis on the equality of variances and determine
that we have evidence that the variances, though unknown, are
equal. How many degrees of freedom will our test statistic have?
Answer: not n-1
◉ **************
How many values can a Poisson random variable have?
Answer: not 2
◉ *******A completely randomized experiment has n _______________
for each treatment.
Answer: not treatments
◉ The coefficient of determination is a measure of the __________ of
variability that can be accounted for by the model.
Answer: fraction
, ◉ Regarding hypothesis testing, alpha is the probability of Type I
error.
Answer: true
◉ *******
We want to do a hypothesis test on the difference between two
population means and we are told the population standard deviation
values for each population. Which test statistic do we use?
Answer: not p0
◉ The standard error of the sample mean is sigma/sqrt(n)
Answer: true
◉ ********
The number of items in a population _______________.
Answer: not is always finite
◉ An experiment that is repeated in the same manner every time
but that can result in different ____________ is called a random
experiment.
Answer: outcomes
