Kody Seeger
HW Ch. 10
1) Is the following statement correct? (Y/N)
We perform an independent two sample t test to compare the means of two independent
populations, when we dont know the standard deviation of the populations.
True
2) When performing a two

Rachel Niese 9:40
1. Is the following statement correct? (Y/N)
We perform an independent two sample t test to compare the means of two
independent populations, when we dont know the standard deviation of the
populations.
Yes
2. When performing a two sampl

1)
Define the Null Hypothesis (H0)
Hypothesis that the population parameter is equal to the company specification
2)
Define the Alternative Hypothesis (H0)
The opposite of the Null Hypothesis, must be right if the null hypothesis is wrong.
3)
Are the Null

1. Why is the normal distribution vitally important in statistics?
Many continuous variables used in business distributions resembling the normal
distribution; can be used to approximate several discrete variables;
foundation for classical statistical inf

1. Define parameter in statistics
Each measure that describes a variable dealing with population
2.
Define statistics in statistics J
If you collected sample data, this would be every measure describing a variable.
3. Define summary table
Tallies the valu

1. How can one compute the (arithmetic) mean?
Add together all the variables and then divide them by the number of variables
present.
2. Is the (arithmetic) mean the most common measure of central tendency? (Y/N)
Yes
3. Define the median
Median is the mid

1. When is the t-test for the mean used?
When you dont know what the standard deviation is.
2. Is the following statement correct? (Y/N)
Yes
3. What is the difference between the z-test formula and the t-test formula?
A z-test is used when you have the po

HW Ch. 10
1) Is the following statement correct? (Y/N)
We perform an independent two sample t test to compare the means of two independent
populations, when we dont know the standard deviation of the populations.
YES
2) When performing a two sample t-test

1) How can one compute the (arithmetic) mean?
Sum of variables
2) Is the (arithmetic) mean the most common measure of central tendency? (Y/N) Y
3) Define the median
the middle value in a ordered array of data ranked from smallest to largest
4) How can one

QBA 2010 Fall 2014 Chimeli
HW Ch. 9 Part 1
Group #: 6
DATE: 10/5/14
Define the Null Hypothesis (H0)
Population parameter is equal to the company specification
1)
Define the Alternative Hypothesis (H0)
Opposite of the null hypothesis
2)
Are the Null and Al

HW Ch. 9 Part 2
1) When is the t-test for the mean used?
When you have the sample deviation
2) Is the following statement correct? (Y/N)
We perform a one sample t test to compare a mean of a sample to a mean of a population,
when we dont know the standard

1) Define parameter in statistics
Measurements that describe a variable based on population
2) Define statistics in statistics
Each measure that describe a variable in a sample
3) Define summary table
score keeper for each category
4) How can you find/com

HW Ch. 11
1)
Is the following statement correct? (Y/N)
We perform an ANOVA when we need to compare means of more than two populations
(groups)
YES
2) What one way means in the title of the chapter one way analysis of variance
(ANOVA)?
Completely randomize

1. Is the following statement correct? (Y/N)
We perform an ANOVA when we need to compare means of more than two
populations (groups).
Yes
2.
What one way means in the title of the chapter one way analysis of variance
(ANOVA)?
It is the completely randomiz