IEE380 Final ExaM
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
*******
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? - CORRECT ANSWER-not p0
The standard error of the sample mean is sigma/sqrt(n) - CORRECT ANSWER-true
********
The number of items in a population _______________. - CORRECT 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. - CORRECT ANSWER-outcomes
If you were asked to sketch the pdf of a normal random variable, X, you would label the "y" axis
as f(z) - CORRECT ANSWER-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?
What is the test statistic that will be used in the hypothesis test? - CORRECT ANSWER-not p0
What letter is used to denote the number of observations in a finite population? - CORRECT
ANSWER-N
If we wanted to make a histogram from a sample of 100 pieces of data, how many bins should
we have according to the text and the Rule of Thumb? - CORRECT ANSWER-10
alpha is - CORRECT ANSWER-the probability of Type I error
Consider this experiment: analysts want to investigate the effect of drying temperature of wheat
grain on baking quality bread. Three temperature levels were used, and the response variable
measured was the volume of the loaf of bread produced. The data are as follows:
The total number of loaves of bread used in this experiment is five. True or False? - CORRECT
ANSWER-false
A standard normal random variable is referred to as the letter ________. - CORRECT ANSWER-Z
Consider this experiment: analysts want to investigate the effect of drying temperature of wheat
grain on baking quality bread. Three temperature levels were used, and the response variable
measured was the volume of the loaf of bread produced. The data are as follows:
This is a randomized complete block experiment. True or False? - CORRECT ANSWER-false
, Given events E1 and E2: P(A N B) = P(A) + P(B) - P(A U B)
** N = upside down U thing
This equation is also known as the ______________ . - CORRECT ANSWER-Addition Rule
As the sample size increases, the distribution of the sample mean, X bar, approaches the
________________ distribution. - CORRECT ANSWER-normal
An experiment that results in only one of two outcomes is called a _________________ trial. -
CORRECT ANSWER-Bernoulli
A ___________experiment is one that is repeated in the same manner every time but that can
result in different outcomes. - CORRECT ANSWER-random
As n goes to infinity, the variance of the sample mean ____________. - CORRECT ANSWER-
decreases
In Chapter 3, the authors use f(x) to denote the probability that a discrete random variable X
(upper case) equals a specific measured numerical value, x, lowercase. In other words, the text
shows f(x) = P(X = x) for X discrete.
What does Dr. Chattin use to denote P(X = x)? - CORRECT ANSWER-p(x)
H0: β1 = β2 = ... = βι = 0
H1: At least one βi not equal to 0
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
*******
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? - CORRECT ANSWER-not p0
The standard error of the sample mean is sigma/sqrt(n) - CORRECT ANSWER-true
********
The number of items in a population _______________. - CORRECT 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. - CORRECT ANSWER-outcomes
If you were asked to sketch the pdf of a normal random variable, X, you would label the "y" axis
as f(z) - CORRECT ANSWER-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?
What is the test statistic that will be used in the hypothesis test? - CORRECT ANSWER-not p0
What letter is used to denote the number of observations in a finite population? - CORRECT
ANSWER-N
If we wanted to make a histogram from a sample of 100 pieces of data, how many bins should
we have according to the text and the Rule of Thumb? - CORRECT ANSWER-10
alpha is - CORRECT ANSWER-the probability of Type I error
Consider this experiment: analysts want to investigate the effect of drying temperature of wheat
grain on baking quality bread. Three temperature levels were used, and the response variable
measured was the volume of the loaf of bread produced. The data are as follows:
The total number of loaves of bread used in this experiment is five. True or False? - CORRECT
ANSWER-false
A standard normal random variable is referred to as the letter ________. - CORRECT ANSWER-Z
Consider this experiment: analysts want to investigate the effect of drying temperature of wheat
grain on baking quality bread. Three temperature levels were used, and the response variable
measured was the volume of the loaf of bread produced. The data are as follows:
This is a randomized complete block experiment. True or False? - CORRECT ANSWER-false
, Given events E1 and E2: P(A N B) = P(A) + P(B) - P(A U B)
** N = upside down U thing
This equation is also known as the ______________ . - CORRECT ANSWER-Addition Rule
As the sample size increases, the distribution of the sample mean, X bar, approaches the
________________ distribution. - CORRECT ANSWER-normal
An experiment that results in only one of two outcomes is called a _________________ trial. -
CORRECT ANSWER-Bernoulli
A ___________experiment is one that is repeated in the same manner every time but that can
result in different outcomes. - CORRECT ANSWER-random
As n goes to infinity, the variance of the sample mean ____________. - CORRECT ANSWER-
decreases
In Chapter 3, the authors use f(x) to denote the probability that a discrete random variable X
(upper case) equals a specific measured numerical value, x, lowercase. In other words, the text
shows f(x) = P(X = x) for X discrete.
What does Dr. Chattin use to denote P(X = x)? - CORRECT ANSWER-p(x)
H0: β1 = β2 = ... = βι = 0
H1: At least one βi not equal to 0
