2. The table at right shows the heights of all fourth-grade students in a particular school, and the frequency of each height. Height (cm) Frequency 130 2 131 7 132 9 1...
2. The table at right shows the heights of all fourth-grade students in a particular school, and the frequency of each height.
|
Height (cm) |
Frequency |
|
130 |
2 |
|
131 |
7 |
|
132 |
9 |
|
133 |
20 |
|
134 |
38 |
|
135 |
18 |
|
136 |
12 |
|
137 |
10 |
|
138 |
5 |
- What percentage of the students is shorter than 135 cm?
- What is the probability that the height of a randomly selected student would be greater than 132 cm but less than 138 cm?
- How many fourth-grade students are represented in the data?
- What is the mean height of the data set?
- Does the data appear to be normally distributed? Why or why not?
Homework Answers
a)
percentage of the students is shorter than 135 cm =(76/121)*100 =62.81% (as 76 out of 121 have height less than 135)
b)
probability that the height of a randomly selected student would be greater than 132 cm but less than 138 cm
=(98/121)*100 =80.99%
c)
How many fourth-grade students are represented in the data =121
d)
| Height (cm) (h) | Frequency(f) | h*f |
| 130 | 2 | 260 |
| 131 | 7 | 917 |
| 132 | 9 | 1188 |
| 133 | 20 | 2660 |
| 134 | 38 | 5092 |
| 135 | 18 | 2430 |
| 136 | 12 | 1632 |
| 137 | 10 | 1370 |
| 138 | 5 | 690 |
| total | 121 | 16239 |
mean height of the data set =16239/121 =134.2066
e)
YEs as data is approximate symmetric and unimodal
Add Answer to:
2. The table at right shows the heights of all fourth-grade students in a particular school, and the frequency of each height. Height (cm) Frequency 130 2 131 7 132 9 1...
Suppose a researcher believes that the average height of female students in a large local high...
Suppose a researcher believes that the average height of female
students in a large local high school is 140 cm. The researcher
wants to construct an interval that contains the true average
height of all female students in the local high school with a
certain prespecified probability. The researcher selects 36 female
students at random from the high school. The distribution of
heights is known to follow a normal distribution.
Suppose a researcher believes that the average height of female...
ath 131-Statistics Spring 2019 Linked Marjana Aktar & I 1/20/19 5 1 Frequency Distributions for Organizing...
ath 131-Statistics Spring 2019 Linked Marjana Aktar & I 1/20/19 5 1 Frequency Distributions for Organizing and Summarizing Data 2.1.15 represents the daily raintall (in inches) for one 0230 0445 The data Construct a frequency distribution beginning with a lower class limit 0 31 of 0.00 and use a class width of 0 20. Does the frequency distribution appear to be roughly a normall distribution 1 27 0.16 15 0 140 0.160550 o 01 002 024 0 14 Daily Rainta...
Problem What is normal? What makes normal curves different? If you flip 10 coins 1,024 times,...
Problem What is normal? What makes normal curves different? If you flip 10 coins 1,024 times, what is the total number of times you will get heads? Let's first focus on the theoretical probabilities. The table below shc the expected values and theoretical probabilities obtained. Expected frequency value out of 1,024 Theoretical Number of heads Percent likelihood probability 1 0 1 1024 10 1 10 1024 45 2 45 1024 120 3 120 1024 210 4 210 1024 252 5...
The subjects in the data are college students. In the data, id is student ID, anxiety...
The subjects in the data are college students. In the data, id is student ID, anxiety is student’s anxiety score via Anxiety Scale, selfest is student’s self-esteem score via Rosenberg Self-esteem Scale, GPA is student’s GPA; for gender, 0=female, 1=male; for grade, 1=freshman, 2=junior, 3=senior. We have known that population mean for Anxiety Scale is μ=60 with σ=10. Raise relevant questions ( 2 questions is fine) about the data extensively, the questions can be either about descriptive analysis or inferential...
data: (copy and paste in excel to view columns in alignment) Sample Repair Time (days) 1 ...
data: (copy and paste in excel to view columns in alignment)
Sample Repair Time (days)
1 12
2 17
3 9
4 16
5 10
6 18
7 12
8 14
9 15
10 14
11 14
12 8
13 11
14 10
15 8
16 8
17 14
18 12
19 14
20 13
21 12
22 15
23 15
24 10
25 24
26 17
27 13
28 15
29 13
30 15
31 36
32 40
33 ...
Problem #1: TO SELECT THE MOST ECONOMICAL Wio SHAPE COLUMN ZO FEET IN HEIGHT SUPPORT AH...
Problem #1: TO SELECT THE MOST ECONOMICAL Wio SHAPE COLUMN ZO FEET IN HEIGHT SUPPORT AH AXIAL LORD OF 370 KIPS using soksi STEEL! ASSUME A FIXED BASE ANDA PINGED TOP (CASE C) WIDE FLANGE SHAPES HP Axis Y-Y Theoretical Dimensions and Properties for Designing Flange Axis X-X | Weight Area Depth Web Section per of of Thick- Thick- Number Foot Section Section Width S 'T Sy Ty ness ness < * A by tw in. in. in.' in. in....
A company sells medical supplies to hospitals and healthcare facilities that are mostly located in the...
A company sells medical supplies to hospitals and healthcare facilities that are mostly located in the Michiana region. The company has 150 employees, and it is about to decide whether part of them should be encouraged to work remotely, and if so, how many employees should do that. There are many aspects to be analyzed such as productivity and collaboration, but you will focus on the costs of space and IT at the company’s main office versus the costs of...
Need Help filling in all yellow blocks. Thank you in advance! 2 Joshua & White Technologies:...
Need Help filling in all yellow blocks. Thank you in
advance!
2 Joshua & White Technologies: December 31 Balance Sheets 3 Thousands of Dollars) 2016 21,000 3,759 52,500 Assets 6 Cash and cash equivalents Short-term investments 8 Accounts Receivable g Inventories 10 Total current assets 11 Net fixed assets 12 Total assets 2015 20,000 3,240 48,000 84000 56.000 $161,259 $127,240 218400 200,000 $379,659 $327 240 4 Liabilities and equity 15 Accounts payable 16 Accruals 17 Notes payable 18 Total current...
Please determine the IDENTITY of the unknown compound and explain how each peak / data point...
Please determine the IDENTITY of the unknown
compound and explain how each peak / data point from the following
instruments led to that identification. What does the gcms
indicate. Thank you very much! (The GCMS data is just a long set of
numbers which is why the question appears so long).
IR of unknown:
NMR unknown Proton Graphs (first is overall graph,
others that follow are zoomed in sections):
NMR unknown Carbon Graphs (first is overall graph,
others that follow...
Suppose a researcher believes that the average height of female
students in a large local high school is 140 cm. The researcher
wants to construct an interval that contains the true average
height of all female students in the local high school with a
certain prespecified probability. The researcher selects 36 female
students at random from the high school. The distribution of
heights is known to follow a normal distribution.
Suppose a researcher believes that the average height of female...
ath 131-Statistics Spring 2019 Linked Marjana Aktar & I 1/20/19 5 1 Frequency Distributions for Organizing and Summarizing Data 2.1.15 represents the daily raintall (in inches) for one 0230 0445 The data Construct a frequency distribution beginning with a lower class limit 0 31 of 0.00 and use a class width of 0 20. Does the frequency distribution appear to be roughly a normall distribution 1 27 0.16 15 0 140 0.160550 o 01 002 024 0 14 Daily Rainta...
Problem What is normal? What makes normal curves different? If you flip 10 coins 1,024 times, what is the total number of times you will get heads? Let's first focus on the theoretical probabilities. The table below shc the expected values and theoretical probabilities obtained. Expected frequency value out of 1,024 Theoretical Number of heads Percent likelihood probability 1 0 1 1024 10 1 10 1024 45 2 45 1024 120 3 120 1024 210 4 210 1024 252 5...
data: (copy and paste in excel to view columns in alignment)
Sample Repair Time (days)
1 12
2 17
3 9
4 16
5 10
6 18
7 12
8 14
9 15
10 14
11 14
12 8
13 11
14 10
15 8
16 8
17 14
18 12
19 14
20 13
21 12
22 15
23 15
24 10
25 24
26 17
27 13
28 15
29 13
30 15
31 36
32 40
33 ...
Problem #1: TO SELECT THE MOST ECONOMICAL Wio SHAPE COLUMN ZO FEET IN HEIGHT SUPPORT AH AXIAL LORD OF 370 KIPS using soksi STEEL! ASSUME A FIXED BASE ANDA PINGED TOP (CASE C) WIDE FLANGE SHAPES HP Axis Y-Y Theoretical Dimensions and Properties for Designing Flange Axis X-X | Weight Area Depth Web Section per of of Thick- Thick- Number Foot Section Section Width S 'T Sy Ty ness ness < * A by tw in. in. in.' in. in....
Need Help filling in all yellow blocks. Thank you in
advance!
2 Joshua & White Technologies: December 31 Balance Sheets 3 Thousands of Dollars) 2016 21,000 3,759 52,500 Assets 6 Cash and cash equivalents Short-term investments 8 Accounts Receivable g Inventories 10 Total current assets 11 Net fixed assets 12 Total assets 2015 20,000 3,240 48,000 84000 56.000 $161,259 $127,240 218400 200,000 $379,659 $327 240 4 Liabilities and equity 15 Accounts payable 16 Accruals 17 Notes payable 18 Total current...
Please determine the IDENTITY of the unknown
compound and explain how each peak / data point from the following
instruments led to that identification. What does the gcms
indicate. Thank you very much! (The GCMS data is just a long set of
numbers which is why the question appears so long).
IR of unknown:
NMR unknown Proton Graphs (first is overall graph,
others that follow are zoomed in sections):
NMR unknown Carbon Graphs (first is overall graph,
others that follow...
Most questions answered within 3 hours.
-
For a population that follows a normal distribution, if the
z-score of a sample point is...
asked 1 minute from now -
A service station has both self-service and full-service
islands. On each island, there is a single...
asked 48 seconds from now -
If
an aqueous solution is 5.30% (w/v) in aluminum iodide, AII3 how
many grams of aluminum...
asked 15 minutes ago -
consider the market for SUVs. For each of the following events,
identify which of the determinants...
asked 17 minutes ago -
Eastern Corp. Use the following selected data and additional
information from the records of Eastern Corp....
asked 21 minutes ago -
Citric Acid Cycle questions
a) Since carbons arrive from glucose via acetyl CoA, what
carbons from...
asked 27 minutes ago -
Microbiology Question:
What is the difference between the innate and adapted immune
response? Give an example...
asked 31 minutes ago -
Emotional reactions to social groups can originate from
____.
A.
seeing a group as a threat...
asked 32 minutes ago -
A consumer group plans to test whether a car gets at least 28
MPG. They will...
asked 34 minutes ago -
Do anyone knows how to write this in java?
You are allowed to use the...
asked 1 hour ago -
A 144 g baseball moving at 28 m/s strikes a stationary 5.25 kg
brick resting on...
asked 1 hour ago -
1.
Basic EOQ Question:
The inventory manager of ABC, Ltd., wants to order
flour for its...
asked 1 hour ago