The IRS is concerned with improving the accuracy of tax information given by its representatives over...
The IRS is concerned with improving the accuracy of tax information given by its representatives over the telephone. Previous studies involved asking a set of 25 questions of a large number of IRS telephone representatives to determine the proportion of correct responses. Historically, the average proportion of correct responses has been 72 percent. Recently, IRS representatives have been receiving more training. On April 26, the set of 25 tax questions were again asked of 20 randomly selected IRS telephone representatives. The numbers of correct answers were 18, 16, 19, 21, 20, 16, 21, 16, 17, 10, 25, 18, 25, 16, 20, 15, 23, 19, 21, and 19.
a. What are the upper and lower control limits for the appropriate p-chart for the IRS? Use z = 3. b. Is the tax information process in statistical control?
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The IRS is concerned with improving the accuracy of tax
information given by its representatives over...
The IRS is concerned with improving the accuracy of tax information given by its representatives over...
The IRS is concerned with improving the accuracy of tax information given by its representatives over the telephone. Previous studies involved asking a set of 25 questions of a large number of IRS telephone representatives to determine the proportion of correct responses. Historically, the average proportion of correct responses has been 72 percent. Recently, IRS representatives have been receiving more training. On April 26, the set of 25 tax questions were again asked of 20 randomly selected IRS telephone representatives....
Question pertains to the x-chart part Sample Mean Range 16 8 12 13 6 6 4...
Question pertains to the
x-chart part
Sample Mean Range 16 8 12 13 6 6 4 15 10 10 11 10 16 13 14 0 14 17 11 12 IU 12 12 11 13 14 12 7 8 13 9 11 14 7 13 15 10 15 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results oblained: Sample Mean Range 16 9 17 12...
A large certified public accounting firm has been monitoring the accuracy of its employees and wishes...
A large certified public accounting firm has been monitoring the accuracy of its employees and wishes to get the number of accounts with errors under statistical control. It has sampled 100 accounts for each of the last 30 days and has examined them for errors, with the results shown in the accompanying data. Complete parts a through c below. Click the icon to view the counts for accounts with errors. a. Construct a p-chart for the account process. Choose the...
The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road...
The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several days of operation, with the following results. Tread wear measurements are in hundredths of an inch. Sample Tread Wear 1 31 42 28 2 26 18 35 3 25 30 34 4 17 25 21 5 38 29 35 6 41 42...
The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen...
The
Money Pit Mortgage Company is interested in monitoring the
performance of the mortgage process. Fifteen samples of five
completed mortgage transactions each were taken during a period
when the process was believed to be in control. The times to
complete the transactions were measured. The means and ranges of
the mortgage process transaction times, measured in days, are as
follows:
b.
Sample123456789 10 11 12 13 14 15 Mean 5 103 7 8 13 14 9 9 9 5...
Refer to the table Factors for Computing Control Chart Limits (3 sigma) for this problem. Pet...
Refer to the table Factors for Computing Control Chart Limits (3 sigma) for this problem. Pet Products, Inc., caters to the growing market for cat supplies, with a full line of products ranging from litter to toys to flea powder. One of its newer products, a tube of fluid that prevents hairballs in long-haired cats, is produced by an automated machine set to fill each tube with 63 5 grams of paste To keep this filling process under control, four...
Please write answers clear. Will leave like if its correct. Age Gen Sibs Work Exercise Units Mom 18 M 1 20 10 15 6 17 F 3 0 7 15 14 23 M 3 20...
Please write answers clear. Will leave like if its correct.
Age
Gen
Sibs
Work
Exercise
Units
Mom
18
M
1
20
10
15
6
17
F
3
0
7
15
14
23
M
3
20
5
13
8
20
M
2
0
5
15
16
18
F
4
22
6
16
9
20
F
2
11
7
20
20
34
F
1
48
10
10
18
22
F
3
37
13
13
18
19
M
3
0
18
14
18...
4 The time needed for checking in at a hotel is to be investigated. Historically, the...
4 The time needed for checking in at a hotel is to be investigated. Historically, the process has had a standard deviation equal to 0.146. The means of 26 samples of n=14 are shown below. Sample Mean Sample Mean 1 3.86 14 3.81 2 3.90 15 3.83 3 3.83 16 3.86 4 3.81 17 3.82 5 3.84 18 3.86 6 3.83 19 3.84 7 3.87 20 3.87 8 3.88 21 3.84 9 3.84 22 3.92 10 3.80 23 3.89 11...
plz dont use hand write. thx!! 15 17 (c) The time needed for checking in at...
plz
dont use hand write. thx!!
15 17 (c) The time needed for checking in at a hotel is to be investigated. Historically, the process has had a standard deviation equal to 0.146. The means of 26 samples of n=14 are shown below. Sample Mean Sample Mean 1 3.86 14 3.81 2 3.90 3.83 3 3.83 16 3.86 4 3.81 3.82 5 3.84 18 3.86 6 3.83 19 3.84 7 3.87 20 3.87 8 3.88 21 3.84 9 3.84 3.92...
question 1,7&10 a) Given the information below: {1, 2, 3, 4, 5, 6} A = {1}...
question 1,7&10
a) Given the information below: {1, 2, 3, 4, 5, 6} A = {1} B= {4,5) C = {3,6} LIST the elements in each of the following sets: AU ( BCC) Hint Do not use ellipsis, but list each element of the set separated by a comma in numerical order in curly braces that look like this: {}. If the set is empty, type Empty Set without curly braces. (AUB) n(AUC) = Hint Do not use ellipsis, but...
Question pertains to the
x-chart part
Sample Mean Range 16 8 12 13 6 6 4 15 10 10 11 10 16 13 14 0 14 17 11 12 IU 12 12 11 13 14 12 7 8 13 9 11 14 7 13 15 10 15 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results oblained: Sample Mean Range 16 9 17 12...
A large certified public accounting firm has been monitoring the accuracy of its employees and wishes to get the number of accounts with errors under statistical control. It has sampled 100 accounts for each of the last 30 days and has examined them for errors, with the results shown in the accompanying data. Complete parts a through c below. Click the icon to view the counts for accounts with errors. a. Construct a p-chart for the account process. Choose the...
The
Money Pit Mortgage Company is interested in monitoring the
performance of the mortgage process. Fifteen samples of five
completed mortgage transactions each were taken during a period
when the process was believed to be in control. The times to
complete the transactions were measured. The means and ranges of
the mortgage process transaction times, measured in days, are as
follows:
b.
Sample123456789 10 11 12 13 14 15 Mean 5 103 7 8 13 14 9 9 9 5...
Refer to the table Factors for Computing Control Chart Limits (3 sigma) for this problem. Pet Products, Inc., caters to the growing market for cat supplies, with a full line of products ranging from litter to toys to flea powder. One of its newer products, a tube of fluid that prevents hairballs in long-haired cats, is produced by an automated machine set to fill each tube with 63 5 grams of paste To keep this filling process under control, four...
Please write answers clear. Will leave like if its correct.
Age
Gen
Sibs
Work
Exercise
Units
Mom
18
M
1
20
10
15
6
17
F
3
0
7
15
14
23
M
3
20
5
13
8
20
M
2
0
5
15
16
18
F
4
22
6
16
9
20
F
2
11
7
20
20
34
F
1
48
10
10
18
22
F
3
37
13
13
18
19
M
3
0
18
14
18...
4 The time needed for checking in at a hotel is to be investigated. Historically, the process has had a standard deviation equal to 0.146. The means of 26 samples of n=14 are shown below. Sample Mean Sample Mean 1 3.86 14 3.81 2 3.90 15 3.83 3 3.83 16 3.86 4 3.81 17 3.82 5 3.84 18 3.86 6 3.83 19 3.84 7 3.87 20 3.87 8 3.88 21 3.84 9 3.84 22 3.92 10 3.80 23 3.89 11...
plz
dont use hand write. thx!!
15 17 (c) The time needed for checking in at a hotel is to be investigated. Historically, the process has had a standard deviation equal to 0.146. The means of 26 samples of n=14 are shown below. Sample Mean Sample Mean 1 3.86 14 3.81 2 3.90 3.83 3 3.83 16 3.86 4 3.81 3.82 5 3.84 18 3.86 6 3.83 19 3.84 7 3.87 20 3.87 8 3.88 21 3.84 9 3.84 3.92...
question 1,7&10
a) Given the information below: {1, 2, 3, 4, 5, 6} A = {1} B= {4,5) C = {3,6} LIST the elements in each of the following sets: AU ( BCC) Hint Do not use ellipsis, but list each element of the set separated by a comma in numerical order in curly braces that look like this: {}. If the set is empty, type Empty Set without curly braces. (AUB) n(AUC) = Hint Do not use ellipsis, but...
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