PLEASE HELP

Question 8

The daily sales at a convenience store produce a distribution that is approximately normal with a mean of 1150 and a standard deviation of 111. 

Don't use plagiarized sources. Get Your Custom Essay on
PLEASE HELP
Just from $13/Page
Order Essay

In your intermediate calculations, round z-values to two decimal places.

The probability that the sales on a given day at this store are more than $1405, rounded to four decimal places, is: [removed].
The probability that the sales on a given day at this store are less than $1305, rounded to four decimal places, is: [removed].
The probability that the sales on a given day at this store are between $1200 and $1300, rounded to four decimal places, is: [removed].

 

Question 3

The following table gives the cumulative frequency distribution of the commuting time (in minutes) from home to work for a sample of 400 persons selected from a city.

Time (minutes)

f

0 to less than 10

64

0 to less than 20

156

0 to less than 30

226

0 to less than 40

287

0 to less than 50

357

0 to less than 60

400

The sample size is:

[removed]

The percentage of persons who commute for less than 30 minutes, rounded to two decimal places, is:

[removed]%

The cumulative relative frequency of the fourth class, rounded to four decimal places, is:

[removed]

The percentage of persons who commute for 40 or more minutes, rounded to two decimal places, is:

[removed]%

The percentage of persons who commute for less than 50 minutes, rounded to two decimal places, is:

[removed]%

The number of persons who commute for 20 or more minutes is:

[removed]

 

 

Question 5

The following table gives the two-way classification of 500 students based on sex and whether or not they suffer from math anxiety.
 
Suffer From Math Anxiety
Sex
Yes
No
Male
140
100
Female
195
65

If you randomly select one student from these 500 students, the probability that this selected student is a female is: [removed] (round your answer to three decimal places, so 0.0857 would be 0.086)

If you randomly select one student from these 500 students, the probability that this selected student suffers from math anxiety is: [removed] (round your answer to three decimal places, so 0.0857 would be 0.086)

If you randomly select one student from these 500 students, the probability that this selected student suffers from math anxiety, given that he is a male is: [removed] (round your answer to three decimal places, so 0.0857 would be 0.086)

If you randomly select one student from these 500 students, the probability that this selected student is a female, given that she does not suffer from math anxiety is: [removed] (round your answer to three decimal places, so 0.0857 would be 0.086)

Which of the following pairs of events are mutually exclusive?

[removed]

Female and no

[removed]

Female and male

[removed]

Female and yes

[removed]

Male and no

[removed]

Male and yes

[removed]

No and yes
Are the events “Has math anxiety” and “Person is female” independent or dependent? Detail the calculations you performed to determine this.
INDEPENDANT OR DEPNEDANT
 
 
 
 
 
 
 
 

Calculate your paper price
Pages (550 words)
Approximate price: -

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.

Essays

Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.

Admissions

Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.

Reviews

Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.

Reviews

Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.