Question

The data show the distance (in miles) from an airport of a sample of 22 inbound and outbound airplanes. Use technology to answer parts (a) and (b). a. Find the data set's first, second, and third quartiles. b. Draw a box-and-whisker plot that represents the data set. 4.3 5.5 2.6 4.1 5.8 5.6 4.3 3.1 5.5 3.1 2.1 4.9 2.6 4.3 3.5 4.8 5.6 4.8 4.9 2.5 2.3 4.7 a. Find the three quartiles. Upper Q 1 equals nothing Upper Q 2 equals nothing Upper Q 3 equals nothing (Type integers or decimals. Do not round.)

Answer #1

By using the technology we have to answers parts a) and b)

By using R software we can give answers.

a) We have to find the data set's first, second, and third quartiles.

R codes and output.

data<-c(4.3,5.5,2.6,4.1,5.8,5.6,4.3,3.1,5.5,3.1,2.1,4.9,2.6,4.3,3.5,4.8,5.6,4.8,4.9,2.5,2.3,4.7)

quantile(data)

quantile(data)

0% 25% 50% 75% 100%

2.1 3.1 4.3 4.9 5.8

First quartile = Q1 = 3.1

Second quartile = Q2 = 4.3

Third quartile = Q3 = 4.9

b) Now we have to plot a boxplot.

R codes and output.

boxplot(data)

The data show the distance (in miles) from an airport of a
sample of 22 inbound and outbound airplanes. Use technology to
answer parts (a) and (b).
a. Find the data set's first, second, and third quartiles.
b. Draw a box-and-whisker plot that represents the data
set.
4.5
3.1
5.4
5.3
3.4
4.4
4.2
2.3
4.8
3.7
4.5
4.4
3.3
2.2
1.9
2.1
4.5
4.1
3.6
4.2
2.4
3.5
a. Find the three quartiles.
Q1=
Q2=
Q3=

Data shows the times for carrying out a blood test at
Rivervalley Labs
Using Excel Plot a histogram of the data. What type of
distribution does the data appear to follow?
Construct and interpret the 95% confidence interval for the
population mean time for carrying out a blood test. Assume that the
population standard deviation is unknown.
Times for blood tests (minutes)
2.5
4.9
3.6
4.3
1.9
3.4
3.2
4.0
3.1
3.6
3.9
4.4
3.9
3.1
2.7
3.5
3.6
3.7...

SHOW ALL WORK. DO NOT USE SOFTWARE TO GENERATE ANSWERS.
Calculate the R-chart and X-bar chart limits for the data given
below.
Day
A
B
C
D
1
7.2
8.4
7.9
4.9
2
5.6
8.7
3.3
4.2
3
5.5
7.3
3.2
6.0
4
4.4
8.0
5.4
7.4
5
9.7
4.6
4.8
5.8
6
8.3
8.9
9.1
6.2
7
4.7
6.6
5.3
5.8
8
8.8
5.5
8.4
6.9
9
5.7
4.7
4.1
4.6
10
3.7
4.0
3.0
5.2
11
2.6
3.9...

Build a stem-and-leaf plot for these measurements
3.1
4.9
2.8
3.6
2.5
4.5
3.5
3.7
4.1
4.9
2.9
2.1
3.5
4.0
3.7
2.7
4.0
4.4
3.7
4.2
3.8
6.2
2.5
2.9
2.8
5.1
1.8
5.6
2.2
3.4
2.5
3.6
5.1
4.8
1.6
3.6
6.1
4.7
3.9
3.9
4.3
5.7
3.7
4.6
4.0
5.6
4.9
4.2
3.1
3.9
A. Describe the form of data distribution. Do you notice any
unusual results?
B. Use the stem-and-leaf plot to find the minimum
observation....

We wish to determine the impact of Specification Buying, X11, on
Satisfaction Level, X10. To do so we will split the Hatco data file
into two separate data sets based on the Specification Buying, X11.
This variable has two categories:
1=employs total value analysis approach, evaluating each
purchase separately;
0 = use of specification buying.
Sort the entire Hatco data set based on Specification Buying.
This will create two separate groups of records. Those records with
X11 = 0 and...

Use the data in Bank Dataset to answer this question.
Construct a 95% confidence interval for the mean increase in
deposits. Note that the population standard deviation σ is not
known in this case. Instead the sample standard deviation s should
be calculated from the sample and the t distribution should be
used.
2. What is the margin of error at the 95% confidence level?
Bank Dataset of Increase in deposits. Mean is 4. Sample size is
152 customers.
4.3...

Use the following cell phone airport data speeds (Mbps) from a
particular network. Find Upper P 75
0.1
0.1
0.2
0.2
0.3
0.3
0.4
0.5
0.6
0.7
0.7
0.7
0.8
0.8
0.9
0.9
1.1
1.1
1.1
1.2
1.8
1.9
2.3
2.4
2.5
2.5
2.8
2.9
3.3
3.4
3.6
3.6
3.9
4.1
4.4
5.6
5.8
5.8
6.8
7.3
9.4
10.5
10.5
12.6
12.9
13.3
13.6
13.8
15.2
26.4

Use the following cell phone airport data speeds (Mbps) from a
particular network. Find the percentile corresponding to the data
speed 4.3 Mbps. 0.1 0.2 0.3 0.4 0.4 0.4 0.5 0.6 0.7 0.7 0.7 0.7 0.8
0.9 0.9 0.9 1.5 1.5 1.7 1.8 1.9 2.1 2.6 2.6 2.6 2.7 2.7 3.1 3.3 4.3
5.1 5.9 6.2 7.1 7.2 7.3 8.7 8.8 9.5 9.6 10.9 11.1 11.2 11.4 12.7
13.4 14.4 14.7 15.5 27.2 Percentile of 4.3=

Jobs and productivity! How do retail stores rate? One way to
answer this question is to examine annual profits per employee. The
following data give annual profits per employee (in units of one
thousand dollars per employee) for companies in retail sales.
Assume σ ≈ 3.8 thousand dollars.
4.0
6.9
4.5
9.0
7.5
5.8
8.2
5.6
2.6
2.9
8.1
−1.9
11.9
8.2
6.4
4.7
5.5
4.8
3.0
4.3
−6.0
1.5
2.9
4.8
−1.7
9.4
5.5
5.8
4.7
6.2
15.0
4.1...

Use the following cell phone airport data speeds (Mbps) from a
particular network. Find Upper Q 1. 0.1 0.3 0.3 0.4 0.5 0.5 0.6 0.6
0.7 0.7 0.7 0.7 0.7 0.8 0.9 1.1 1.2 1.5 1.7 1.8 2.1 2.1 2.1 2.1 2.5
3.3 3.5 3.6 4.4 5.5 6.2 7.1 7.2 7.6 7.9 8.1 8.2 8.8 9.6 10.4 11.3
11.4 11.5 12.4 12.9 13.8 15.3 15.3 15.8 28.5 Upper Q 1equals Mbps
(Type an integer or a decimal. Do not round.)

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