# Statistics: Analyzing Data

Don't use plagiarized sources. Get Your Custom Essay on
Statistics: Analyzing Data
Just from \$13/Page

Questions:

1. For day 1 only (30 samples total), what is the density average and standard deviation?

2. For all days and all samples, what is the density average and standard deviation? Remember, these are samples of density, not the entire population.

3. For Day 1 only (30 samples), is the pavement density greater than 91.0% with 95% confidence?

4. For all days and all samples, is the pavement density greater than 91.0% with 95% confidence?

5. What are your answers for #3 and #4 if the density value is 91.5%?

6. What are your answers for #3 and #4 if the density value is 92.0%?

Does what you calculate make sense to you?

Hot mix asphalt pavement density measurements on a 15,987 ton job
Lot Number Lot_Date
1
Day 1
2
Day 1
3
Day 1
4
Day 1
5
Day 1
6
Day 1
7
Day 2
8
Day 2
9
Day 2
10
Day 2
11
Day 3
12
Day 3
13
Day 3
14
Day 4
15
Day 4
16
Day 4
17
Day 4
18
Day 5
19
Day 5
20
Day 5
21
Day 5
22
Day 6
23
Day 6
24
Day 6
25
Day 6
26
Day 6
27
Day 7
28
Day 7
29
Day 7
30
Day 7
31
Day 8
32
Day 8
33
Day 8
34
Day 8
35
Day 8
36
Day 8
37
Day 9
38
Day 9
39
Day 9
40
Day 9
Lot Size
(tons)
433
400
400
400
400
315
400
400
448
450
400
400
443
400
400
400
257
400
400
400
160
400
400
400
400
413
400
400
400
125
400
400
400
400
400
305
400
400
400
400
Measured Density (% Rice)
Sample 1 Sample 2 Sample 3 Sample 4 Sample 5
96.2
91.2
96.2
96.8
94.8
91.0
91.2
91.1
91.3
94.9
92.5
91.2
93.1
91.7
92.0
91.1
94.2
91.5
91.7
92.8
92.3
91.8
92.2
91.7
92.7
92.2
91.1
93.0
93.2
91.9
91.3
91.4
92.2
90.9
91.6
93.1
92.3
92.0
91.0
90.9
90.8
91.2
91.5
91.3
90.9
91.1
91.5
90.8
92.6
91.4
91.5
91.4
91.1
91.0
90.9
92.8
92.2
93.8
91.7
92.6
92.7
93.3
91.8
91.7
91.3
93.4
91.4
93.8
93.6
93.5
92.5
94.9
92.0
91.0
93.1
92.1
92.3
92.7
92.6
91.1
91.1
91.8
91.6
91.7
92.0
93.3
93.6
93.1
91.8
92.4
91.5
91.0
92.4
91.7
91.8
92.2
93.3
91.5
90.8
92.7
92.2
91.9
91.5
92.0
91.9
91.6
91.2
91.7
91.9
91.7
91.0
91.0
92.1
92.2
91.5
91.5
91.0
91.6
91.8
91.3
91.5
91.7
91.0
91.2
91.7
92.7
91.2
92.3
91.0
91.7
91.5
92.6
91.2
93.6
91.9
91.7
95.8
91.6
91.6
91.3
92.6
91.9
91.8
93.3
93.5
92.7
92.4
93.4
91.6
91.1
92.6
92.6
91.5
92.1
91.4
91.8
92.5
93.9
93.0
91.6
92.3
92.6
91.6
92.3
91.4
92.6
91.0
92.8
91.7
91.7
92.4
91.6
92.9
92.5
91.8
92.6
92.6
91.0
93.4
91.5
92.6
91.1
94.5
91.6
91.4
91.1
91.7
91.6
92.6
91.9
91.3
91.1
92.5
91.9
91.0
91.2
91.0
91.0
91.0
91.2
These densities are t
less. Either way, it m
here.
Densities are measu
possible density (if th
Density). Therefore,
the mixture being m
As you can see the d
project the specified
to 92.0%).
41
42
43
Day 9
Day 10
Day 10
85
400
153
15987
91.3
91.7
92.3
91.9
92.0
92.0
90.7
94.1
90.7
91.3
91.8
90.5
90.9
92.9
90.2
These densities are taken 5 for every 400 tons paved (more or less). There
are allowances made for the end of a day to have that amount be more or
less. Either way, it makes no difference for what you are being asked to do
here.
Densities are measured and expressed as a percentage of the maximum
possible density (if there were no air voids in the mixture, called Rice
Density). Therefore, a density of 91.8% means that there are 8.2% air voids in
the mixture being measured.
As you can see the densities measured vary each day. At the time of this
project the specified minimum density was 91.0% (FYI: it has now been raised
to 92.0%).

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.

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.

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?

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

Proceed with the payment

Choose the payment system that suits you most.

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.

## 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.