Name

Directions:

1. For
each the following variables from the Salary
Data Set provide the measures of location and measures of dispersion for
the following variables:
1.

2.

3. Which
variable has the greatest relative variability?

2. You are the manager of a high-end
ladies fashion store. For the past few
months you have been gathering data and found that 45% of persons entering the
store actually make a purchase. Assume these data follow a Binomial Distribution and use Excel to calculate the following binomial probabilities:
1.
If 15 people enter the store, what is
the probability that 9 of them will make a purchase?
2.
What is the probability that at least
6 of the 15 people will make a purchase?

3.
Using
the Salary Data Set what is the
probability of randomly selecting one individual (male or female) with a current annual salary of over $55,000?

4.
The
time required to complete a project is normally distributed with a mean of 80
weeks and a standard deviation of 5 weeks.
The construction company must pay a penalty if the project is not
finished by the due date of the contract. If a construction company bidding on
this contract wishes to be 90 percent sure of finishing by the due date, use
the NORMINV Excel Function to
determine what due date (project week #) should be negotiated?

5. In a state lottery, participants select 6
numbers between 1 and 49. At the end of the week, the state lottery commission
randomly draws 6 numbers between 1 and 49. How many different possible winning
number combinations could be
drawn by the lottery commission?

6. From the Salary Data Set and assuming that the salary data is a random
sample from the population of salaries from the multi-national company use the
90% confidence level in PHStat to estimate the mean current salary for company executives.
1. The
90% confidence level is:

2. If
you were to change the confidence level to 95%, what would happen to the
confidence interval?

7. Using the Salary Data Set,

1.
Create a scatter plot
to show this relationship between education and beginning salary
2.
Determine the correlation
between the variables
The higher the education the potential to earn
more money

8. Explain why rejecting the null hypothesis
does not make the alternative hypothesis true.

9. What is the
purpose of statistical inference? uses information from a sample to draw
conclusions (inferences) about the population from which the sample was taken.
10.
What is the difference between sampling error and the standard error of the
mean?

11. You
are a consultant working for Kaplan Consulting. The Director of Human Resources
for a multi-national company has requested help in investigating a pay
discrimination complaint brought by a female executive. The company provided
the data in the Salary Data Set. Use PHStat and the appropriate t
test, to investigate the claim of pay discrimination in the current salaries.
Be sure to include:
1. Your
null and alternative hypotheses;
2. The
level of alpha you elect to use and why in terms of Type I or Type II error;

3. Show
the output from the analysis;
Males
Females

4. Your
interpretation of the results; and
5. A
written statement to the director of Human Resources as to whether they should
be concerned about the complaint.

Submitting Your Project

Save
your project in a location that you will remember and with your full name. When
you are ready to submit your project, click on the Dropbox and complete the
steps below:

Click
the link that says, Submit an Assignment.

In
the Submit to Basket menu, select Unit 4 Project.

In
the Comments field include your name.

Click
the Add Attachments button.

Follow
the steps listed to attach your Word Document.

You
should revisit the Dropbox to view any helpful feedback your instructor has and
to retrieve your graded project.

Make
sure that you save a copy of your submitted project.

NameDirections:1. For
each the following variables from the Salary
Data Set provide the measures of location and measures of dispersion for
the following variables:1. 2. 3. Which
variable has the greatest relative variability?2. You are the manager of a high-end
ladies fashion store. For the past few
months you have been gathering data and found that 45% of persons entering the
store actually make a purchase. Assume these data follow a Binomial Distribution and use Excel to calculate the following binomial probabilities:1.
If 15 people enter the store, what is
the probability that 9 of them will make a purchase? 2.
What is the probability that at least
6 of the 15 people will make a purchase? 3.
Using
the Salary Data Set what is the
probability of randomly selecting one individual (male or female) with a current annual salary of over $55,000?4.
The
time required to complete a project is normally distributed with a mean of 80
weeks and a standard deviation of 5 weeks.
The construction company must pay a penalty if the project is not
finished by the due date of the contract. If a construction company bidding on
this contract wishes to be 90 percent sure of finishing by the due date, use
the NORMINV Excel Function to
determine what due date (project week #) should be negotiated?5. In a state lottery, participants select 6
numbers between 1 and 49. At the end of the week, the state lottery commission
randomly draws 6 numbers between 1 and 49. How many different possible winning
number combinations could be
drawn by the lottery commission? 6. From the Salary Data Set and assuming that the salary data is a random
sample from the population of salaries from the multi-national company use the
90% confidence level in PHStat to estimate the mean current salary for company executives. 1. The
90% confidence level is: 2. If
you were to change the confidence level to 95%, what would happen to the
confidence interval? 7. Using the Salary Data Set, 1.
Create a scatter plot
to show this relationship between education and beginning salary2.
Determine the correlation
between the variablesThe higher the education the potential to earn
more money8. Explain why rejecting the null hypothesis
does not make the alternative hypothesis true. 9. What is the
purpose of statistical inference? uses information from a sample to draw
conclusions (inferences) about the population from which the sample was taken.10.
What is the difference between sampling error and the standard error of the
mean?11. You
are a consultant working for Kaplan Consulting. The Director of Human Resources
for a multi-national company has requested help in investigating a pay
discrimination complaint brought by a female executive. The company provided
the data in the Salary Data Set. Use PHStat and the appropriate t
test, to investigate the claim of pay discrimination in the current salaries.
Be sure to include:1. Your
null and alternative hypotheses;2. The
level of alpha you elect to use and why in terms of Type I or Type II error;
3. Show
the output from the analysis;Males Females 4. Your
interpretation of the results; and 5. A
written statement to the director of Human Resources as to whether they should
be concerned about the complaint. Submitting Your Project
Save
your project in a location that you will remember and with your full name. When
you are ready to submit your project, click on the Dropbox and complete the
steps below:
Click
the link that says, Submit an Assignment.
In
the Submit to Basket menu, select Unit 4 Project.
In
the Comments field include your name.
Click
the Add Attachments button.
Follow
the steps listed to attach your Word Document.
You
should revisit the Dropbox to view any helpful feedback your instructor has and
to retrieve your graded project.
Make
sure that you save a copy of your submitted project.