1|Page
IEE 380 Exam || Most Recent Exam 2026 Actual
Complete Real Exam Questions And Correct Answers
||Verified Exam!!! (Verified Answers) Already Graded
A+ / Guaranteed Success!! Newest Exam!!!
********
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? - Answers-
not n-1
**************
How many values can a Poisson random variable have? -
Answers-not 2
*******A completely randomized experiment has n
_______________ for each treatment. - Answers-not
treatments
The coefficient of determination is a measure of the
__________ of variability that can be accounted for by the
model. - Answers-fraction
,2|Page
Regarding hypothesis testing, alpha is the probability of
Type I error. - Answers-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? - Answers-not p0
The standard error of the sample mean is sigma/sqrt(n) -
Answers-true
********
The number of items in a population _______________. -
Answers-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. - Answers-outcomes
, 3|Page
If you were asked to sketch the pdf of a normal random
variable, X, you would label the "y" axis as f(z) - Answers-
false
**********
A rivet is to be inserted into a hole. A random sample of 15
parts is selected and the hole diameter is measured. The
sample mean is 1.2 mm and the sample standard
deviation is .008 millimeters. Is there strong evidence to
indicate that the standard deviation of hole diameter
exceeds 0.01 millimeters?
Using the notation from the text, which of the following is
analogous to "b" in the linear model, y = mx + b? -
Answers-β0
Using the notation given in the text, which of the following
estimates the slope in a simple linear regression model? -
Answers-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 ? - Answers-1
IEE 380 Exam || Most Recent Exam 2026 Actual
Complete Real Exam Questions And Correct Answers
||Verified Exam!!! (Verified Answers) Already Graded
A+ / Guaranteed Success!! Newest Exam!!!
********
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? - Answers-
not n-1
**************
How many values can a Poisson random variable have? -
Answers-not 2
*******A completely randomized experiment has n
_______________ for each treatment. - Answers-not
treatments
The coefficient of determination is a measure of the
__________ of variability that can be accounted for by the
model. - Answers-fraction
,2|Page
Regarding hypothesis testing, alpha is the probability of
Type I error. - Answers-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? - Answers-not p0
The standard error of the sample mean is sigma/sqrt(n) -
Answers-true
********
The number of items in a population _______________. -
Answers-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. - Answers-outcomes
, 3|Page
If you were asked to sketch the pdf of a normal random
variable, X, you would label the "y" axis as f(z) - Answers-
false
**********
A rivet is to be inserted into a hole. A random sample of 15
parts is selected and the hole diameter is measured. The
sample mean is 1.2 mm and the sample standard
deviation is .008 millimeters. Is there strong evidence to
indicate that the standard deviation of hole diameter
exceeds 0.01 millimeters?
Using the notation from the text, which of the following is
analogous to "b" in the linear model, y = mx + b? -
Answers-β0
Using the notation given in the text, which of the following
estimates the slope in a simple linear regression model? -
Answers-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 ? - Answers-1
