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IEE 380 Final Exam Questions with
Correct Answers Questions and Correct
Answers/ Latest Update / Already Graded
Using the notation from the text, which of the following is analogous
to "b" in the linear model, y = mx + b?
Ans: β0
Using the notation given in the text, which of the following estimates
the slope in a simple linear regression model?
Ans: β1 hat
You have determined L and U such that P(L < sigma1^2/sigma2^2 < U)
= .95. What number will be in the this confidence interval if you fail to
reject the null hypothesis H0: sigma1^2 = sigma2^2 ?
Ans: 1
When reading the Excel output for a randomized complete block
design, you use the p-values in the "Columns" row if your treatments
are presented in the Excel sheet in _______
Ans: columns
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The number of items in a random sample is denoted as _______.
Ans: n
If X is the face value for the throw of a fair die, the name of the
probability distribution of X is the
Ans: discrete random variable
If random variable X has a/an _______________ number of values in a
finite interval of its range, X is continuous.
Ans: infinite
An experiment that is repeated in the same manner every time but
that can result in different outcomes is called a _______________
experiment.
Ans: random
what are the random variables
Ans: xbar, S, S^2
What letter is used to denote the number of observations in a sample?
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Ans: n
S^2 is the ___________________ variance.
Ans: sample
According to the text's notation, a residual is the difference between
the __________ response and the model-predicted response.
Ans: actual
β0hat is the estimate of the ___________ in a simple linear regression
model
Ans: 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?
Ans: not n-1
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**************
How many values can a Poisson random variable have?
Ans: not 2
*******A completely randomized experiment has n _______________
for each treatment.
Ans: not treatments
The coefficient of determination is a measure of the __________ of
variability that can be accounted for by the model.
Ans: fraction
Regarding hypothesis testing, alpha is the probability of Type I error.
Ans: 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?
Ans: not p0
All rights reserved © 2025/ 2026 |
IEE 380 Final Exam Questions with
Correct Answers Questions and Correct
Answers/ Latest Update / Already Graded
Using the notation from the text, which of the following is analogous
to "b" in the linear model, y = mx + b?
Ans: β0
Using the notation given in the text, which of the following estimates
the slope in a simple linear regression model?
Ans: β1 hat
You have determined L and U such that P(L < sigma1^2/sigma2^2 < U)
= .95. What number will be in the this confidence interval if you fail to
reject the null hypothesis H0: sigma1^2 = sigma2^2 ?
Ans: 1
When reading the Excel output for a randomized complete block
design, you use the p-values in the "Columns" row if your treatments
are presented in the Excel sheet in _______
Ans: columns
All rights reserved © 2025/ 2026 |
, Page |2
The number of items in a random sample is denoted as _______.
Ans: n
If X is the face value for the throw of a fair die, the name of the
probability distribution of X is the
Ans: discrete random variable
If random variable X has a/an _______________ number of values in a
finite interval of its range, X is continuous.
Ans: infinite
An experiment that is repeated in the same manner every time but
that can result in different outcomes is called a _______________
experiment.
Ans: random
what are the random variables
Ans: xbar, S, S^2
What letter is used to denote the number of observations in a sample?
All rights reserved © 2025/ 2026 |
, Page |3
Ans: n
S^2 is the ___________________ variance.
Ans: sample
According to the text's notation, a residual is the difference between
the __________ response and the model-predicted response.
Ans: actual
β0hat is the estimate of the ___________ in a simple linear regression
model
Ans: 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?
Ans: not n-1
All rights reserved © 2025/ 2026 |
, Page |4
**************
How many values can a Poisson random variable have?
Ans: not 2
*******A completely randomized experiment has n _______________
for each treatment.
Ans: not treatments
The coefficient of determination is a measure of the __________ of
variability that can be accounted for by the model.
Ans: fraction
Regarding hypothesis testing, alpha is the probability of Type I error.
Ans: 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?
Ans: not p0
All rights reserved © 2025/ 2026 |
