Question
In: Statistics and Probability
Fretting is a wear process that results from tangential oscillatory movements. The following data on volume...
Fretting is a wear process that results from tangential oscillatory movements. The following data on volume wear the base oils having four different viscosities.
The viscosities are as follows, respectively: 20.4,30.2,89.4, and 252.6.
Data:
A: (17.7,27.3,29.9,30.8,58.8, 76.5)
B: (18.3,32.8,41.6,44.5,47.1,48.7)
C: (57.1,66.0,73.3, 81.1,93.8,133.2)
D: (16.6,23.6,24.2,28.7,30.6,38.9)
Find the sample means for each data set. (Show formula and all work please.)
Find the standard deviation. (Show the formula and all work please.)
Find the coefficient of the sample. The computation is
as follows:
k = 100*stdev / (x-bar)
(Show all work please.)
(Must show as a percentage.)
Show all work, and information for a boxplot.
Thanks!
Solutions
orchestra answered 2 years agoRelated Solutions
The following data are results from a studying the effects of using four quarters or a...
The following data are results from a studying the effects of
using four quarters or a $1 bill on keeping the money or spending
it. 43 students were given the denominations.
Purchased Gum Kept the Money Total
Given Four Quarters 27 16
Given a $1 Bill 12 34
Total 43
(a) What are the two row totals?
(b) What are the two column totals?
(c) Find the probability (as a fraction and a decimal rounded to
three places) of randomly...
The following results are from data concerning the amount withdrawn from an ATM machine based on...
The following results are from data concerning the amount
withdrawn from an ATM machine based on the amount of time spent at
the ATM machine (SECONDS) and the gender, FEMALE (dummy variable =
1 for females and = 0 for males) and an interaction term,
SECONDS*FEMALE
SUMMARY OUTPUT
Regression Statistics
Multiple R
0.503
R Square
Adjusted R Square
Standard Error
Observations
50
ANOVA
df
SS
MS
F
Significance F
Regression
2728.7
5.19
0.004
Residual
24161.8
525.3
Total
32348
Coefficients...
The following results are from data concerning the amount withdrawn from an ATM machine based on...
The following results are from data concerning the amount
withdrawn from an ATM machine based on the amount of time spent at
the ATM machine (SECONDS) and the gender, FEMALE (dummy variable =
1 for females and = 0 for males) and an interaction term,
SECONDS*FEMALE
SUMMARY OUTPUT
Regression Statistics
Multiple R
0.503
R Square
Adjusted R Square
Standard Error
Observations
50
ANOVA
df
SS
MS
F
Significance F
Regression
2728.7
5.19
0.004
Residual
24161.8
525.3
Total
32348
Coefficients...
The Titanic Used the data in the following table, which summarizes results from the sinking of...
The Titanic Used the data in the following table, which
summarizes results from the sinking of the titanic.
Men
Women
Boys
Girls
Survived
332
318
29
27
Died
1360
104
35
18
If one of the Titanic passengers is randomly selected, find the
probability of getting someone who is a women or survivor.
If one of the Titanic passengers is randomly selected, find the
probability of getting a man and someone who survived the
sinking.
If one of the Titanic...
Cost-Volume-Profit Relations: Missing Data Following are data from 4 separate companies. Supply the missing data in...
Cost-Volume-Profit Relations: Missing Data
Following are data from 4 separate companies. Supply the missing
data in each independent case
Case A
Case B
Case C
Case D
Unit Sales
1,000
800
Answer
Answer
Sales revenue
$20,000
Answer
Answer
$60,000
Variable cost per unit
$10
$2
$10
Answer
Contribution margin
Answer
$800
Answer
Answer
Fixed Costs
$8,100
Answer
$60,000
Answer
Net income
Answer
$600
Answer
Answer
Unit contribution margin
Answer
Answer
Answer
$13
Break-even point (units)
Answer
Answer
4,000
2,000
Margin...
Cost-Volume-Profit Relations: Missing Data Following are data from 4 separate companies. Supply the missing data in...
Cost-Volume-Profit Relations: Missing Data
Following are data from 4 separate companies. Supply the missing
data in each independent case.
Case 1
Case 2
Case 3
Case 4
Sales revenue
$90,000
$150,000
Answer
Answer
Contribution margin
$45,000
Answer
$40,000
Answer
Fixed costs
$30,000
Answer
Answer
Answer
Net income
Answer
$15,000
$24,000
Answer
Variable cost ratio
Answer
0.40
Answer
0.60
Contribution margin ratio
Answer
Answer
0.25
Answer
Break-even point (dollars)
Answer
Answer
Answer
$150,000
Margin of safety (dollars)
Answer
Answer
Answer
$125,000
Cost-Volume-Profit Relations: Missing Data Following are data from 4 separate companies. Supply the missing data in...
Cost-Volume-Profit Relations: Missing Data
Following are data from 4 separate companies. Supply the missing
data in each independent case
Case A
Case B
Case C
Case D
Unit Sales
1,000
800
Answer
Answer
Sales revenue
$20,000
Answer
Answer
$60,000
Variable cost per unit
$10
$2
$10
Answer
Contribution margin
Answer
$800
Answer
Answer
Fixed Costs
$8,100
Answer
$60,000
Answer
Net income
Answer
$600
Answer
Answer
Unit contribution margin
Answer
Answer
Answer
$13
Break-even point (units)
Answer
Answer
4,000
2,000
Margin...
Cost-Volume-Profit Relations: Missing Data Following are data from 4 separate companies. Supply the missing data in...
Cost-Volume-Profit Relations: Missing Data
Following are data from 4 separate companies. Supply the missing
data in each independent case.
Case 1
Case 2
Case 3
Case 4
Sales revenue
$100,000
$90,000
Answer
Answer
Contribution margin
$40,000}
Answer
$20,000
Answer
Fixed Costs
$24,000
Answer
Answer
Answer
Net income
Answer
$7,000
$9,000
Answer
Variable cost ratio
Answer
0.50
Answer
0.20
Contribution margin ratio
Answer
Answer
0.40
Answer
Break-even point (dollars)
Answer
Answer
Answer
$20,000
Margin of safety (dollars)
Answer
Answer
Answer
$30,000
A previous semester's set of data from the initial questionnaire results in the following frequency table...
A previous semester's set of data from the initial questionnaire
results in the following frequency table (some minor adjustments
were made).
Eye color
+8 hours of sleep
<8 hours of sleep
Brown
6
7
Blue
4
1
Other
1
3
(a) If the possibilities for eye color are brown (Br), blue
(Bl), and other (O), and the possibilities for sleep are at least 8
hours (Y) and less than 8 hours (N), one possible outcome for eye
color and sleep...
Results from the last four samples from a process are shown in the table. Calculate control...
Results from the last four samples from a process are shown in
the table. Calculate control limits for an R and X chart. Determine
whether the process is in statistical control.
Sample number
Observation 1
Observation 2
Observation 3
Observation 4
1
5
5.01
4.9
5
2
5.01
5.02
4.98
5
3
5.02
5.07
4.99
4.98
4
4.9
4.92
5.01
5.23
To control the lead time of a process, samples of size ten are
taken from the process. If the...
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