IEE 380 Final Exam | Questions and Well
Detailed Answers | 2026 Update | 100%
Correct – ASU||GRADED A+|| LATEST!!!
Using the notation from the text, which of the following is analogous to "b" in the linear
model, y = mx + b? -CORRECTANSWER β0
Using the notation given in the text, which of the following estimates the slope in a
simple linear regression model? -CORRECTANSWER 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 ? -CORRECTANSWER 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
_______ -CORRECTANSWER columns
The number of items in a random sample is denoted as _______. -CORRECTANSWER
n
If X is the face value for the throw of a fair die, the name of the probability distribution of
X is the -CORRECTANSWER discrete random variable
,If random variable X has a/an _______________ number of values in a finite interval of
its range, X is continuous. -CORRECTANSWER infinite
An experiment that is repeated in the same manner every time but that can result in
different outcomes is called a _______________ experiment. -CORRECTANSWER
random
what are the random variables -CORRECTANSWER xbar, S, S^2
What letter is used to denote the number of observations in a sample? -
CORRECTANSWER n
S^2 is the ___________________ variance. -CORRECTANSWER sample
According to the text's notation, a residual is the difference between the __________
response and the model-predicted response. -CORRECTANSWER actual
β0hat is the estimate of the ___________ in a simple linear regression model -
CORRECTANSWER 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? -
CORRECTANSWER not n-1
**************
How many values can a Poisson random variable have? -CORRECTANSWER not 2
*******A completely randomized experiment has n _______________ for each
treatment. -CORRECTANSWER not treatments
The coefficient of determination is a measure of the __________ of variability that can
be accounted for by the model. -CORRECTANSWER fraction
Regarding hypothesis testing, alpha is the probability of Type I error. -
CORRECTANSWER 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? -CORRECTANSWER not p0
The standard error of the sample mean is sigma/sqrt(n) -CORRECTANSWER true
Detailed Answers | 2026 Update | 100%
Correct – ASU||GRADED A+|| LATEST!!!
Using the notation from the text, which of the following is analogous to "b" in the linear
model, y = mx + b? -CORRECTANSWER β0
Using the notation given in the text, which of the following estimates the slope in a
simple linear regression model? -CORRECTANSWER 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 ? -CORRECTANSWER 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
_______ -CORRECTANSWER columns
The number of items in a random sample is denoted as _______. -CORRECTANSWER
n
If X is the face value for the throw of a fair die, the name of the probability distribution of
X is the -CORRECTANSWER discrete random variable
,If random variable X has a/an _______________ number of values in a finite interval of
its range, X is continuous. -CORRECTANSWER infinite
An experiment that is repeated in the same manner every time but that can result in
different outcomes is called a _______________ experiment. -CORRECTANSWER
random
what are the random variables -CORRECTANSWER xbar, S, S^2
What letter is used to denote the number of observations in a sample? -
CORRECTANSWER n
S^2 is the ___________________ variance. -CORRECTANSWER sample
According to the text's notation, a residual is the difference between the __________
response and the model-predicted response. -CORRECTANSWER actual
β0hat is the estimate of the ___________ in a simple linear regression model -
CORRECTANSWER 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? -
CORRECTANSWER not n-1
**************
How many values can a Poisson random variable have? -CORRECTANSWER not 2
*******A completely randomized experiment has n _______________ for each
treatment. -CORRECTANSWER not treatments
The coefficient of determination is a measure of the __________ of variability that can
be accounted for by the model. -CORRECTANSWER fraction
Regarding hypothesis testing, alpha is the probability of Type I error. -
CORRECTANSWER 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? -CORRECTANSWER not p0
The standard error of the sample mean is sigma/sqrt(n) -CORRECTANSWER true
