A hospital has a main campus and three satellite locations. Management wants to reduce waiting time...
A hospital has a main campus and three satellite locations. Management wants to reduce waiting time for ER cases. A random sample of 11 ER cases at each location were? selected, and the waiting time was measured. Complete parts? (a) through? (c).
A. At the 0.05 level of? significance, is there evidence of a difference in the mean waiting times in the four? locations? Determine the hypotheses.
B. Find the test? statistic, FSTAT=
C. Find the p-value=
D. Reject or do not reject and why?
E. If? appropriate, use LSD confidence intervals to determine which locations differ in mean waiting time. At the 0.05 level of? significance, for which locations is there enough evidence to conclude that the mean waiting time? differs? Select all that apply.
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A hospital has a main campus and three satellite locations.
Management wants to reduce waiting time...
A hospital conducted a study of the waiting time in its emergency room. The hospital has...
A hospital conducted a study of the waiting time in its emergency room. The hospital has a main campus and three satellite locations. Management has a business objective of reducing waiting time for emergency room cases that do not require immediate attention. To study this, a random sample of 15 emergency room cases that did not require immediate attention at each location were selected on a particular day, and the waiting time (measured from check-in to when the patient was...
11.9 A hospital conducted a study of the waiting time in its emergency room. The hospital...
11.9 A hospital conducted a study of the waiting time in its emergency room. The hospital has a main campus and three affil Kated Vocations. Management had a business objective of reducing waiting time for emergency room cases that did not require immedi- ate attention. To study ti a random sample of 15 emergency room cases that did not require immediate attention at each location were selected on a particular day, and the waiting times (measured from check-in to when...
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CCN and ActMedia provided a television channel targeted to individuals waiting in supermarket checkout ines. The channel showed news, short features, and advertisements. The length of the program was based on the assumption that the population mean time a shopper stands in a supermarket checkout line is 8 minutes. A sample of actual waiting times will be used to test this assumption and determine whether actual mean waiting time differs from this standard. (a) Formulate the hypotheses for this application...
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To test whether the mean time needed to mix a batch of material
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minutes) needed to mix the material.
Manufacturer
1
2
3
20
28
20
25
25
18
24
32
24
27
27
18
(a)
Use these data to test whether the population mean times for
mixing a batch of material differ for the three manufacturers.
Use
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A hospital was concerned about reducing its wait time. A targeted wait time goal of 25...
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To test whether the mean time needed to mix a batch of material is the same...
To test whether the mean time needed to mix a batch of material
is the same for machines produced by three manufacturers, a
chemical company obtained the following data on the time (in
minutes) needed to mix the material.
Manufacturer
1
2
3
21
27
19
26
27
19
23
31
23
26
23
23
(a)
Use these data to test whether the population mean times for
mixing a batch of material differ for the three manufacturers.
Use
α =...
11.9 A hospital conducted a study of the waiting time in its emergency room. The hospital has a main campus and three affil Kated Vocations. Management had a business objective of reducing waiting time for emergency room cases that did not require immedi- ate attention. To study ti a random sample of 15 emergency room cases that did not require immediate attention at each location were selected on a particular day, and the waiting times (measured from check-in to when...
CCN and ActMedia provided a television channel targeted to individuals waiting in supermarket checkout ines. The channel showed news, short features, and advertisements. The length of the program was based on the assumption that the population mean time a shopper stands in a supermarket checkout line is 8 minutes. A sample of actual waiting times will be used to test this assumption and determine whether actual mean waiting time differs from this standard. (a) Formulate the hypotheses for this application...
To test whether the mean time needed to mix a batch of material
is the same for machines produced by three manufacturers, a
chemical company obtained the following data on the time (in
minutes) needed to mix the material.
Manufacturer
1
2
3
20
28
20
25
25
18
24
32
24
27
27
18
(a)
Use these data to test whether the population mean times for
mixing a batch of material differ for the three manufacturers.
Use
α =...
To test whethoer the mean time needed to mix a batch of materlal is the same for machines produced by three manufacturers, a chemical company obtained the follewing data on the time (is misutes) needed to mix the material Manufacturer 1 2 3 19 28 19 27 26 20 23 32 23 23 30 (a) Use these data to test whether the population mean times for mbing a batch of material differ for the three manufacturers. Use e0.05 State the...
A hospital was concerned about reducing its wait time. A targeted wait time goal of 25 minutes was set. After implementing an improvement framework and process, a sample of 332 patients showed the mean wait time was 23.14 minutes, with a standard deviation of 16.05 minutos. Complete parts (a) and (b) below. a. If you test the null hypothesis at the 0.05 level of significance, is there evidence that the population mean wait time is less than 25 minutes? State...
A hospital was concerned about reducing its wait time. A targeted wait time goal of 25 minutes was set. After implementing an improvement framework and process, a sample of 362 patients showed the mean wait time was 23.16 minutes, with a standard deviation of 16. 1 minutes. Complete parts (a) and (b) below. a. If you test the null hypothesis at the 0.05 level of significance, is there evidence that the population mean wait time is less than 25 minutes?...
To test whether the mean time needed to mix a batch of material
is the same for machines produced by three manufacturers, a
chemical company obtained the following data on the time (in
minutes) needed to mix the material.
Manufacturer
1
2
3
21
27
19
26
27
19
23
31
23
26
23
23
(a)
Use these data to test whether the population mean times for
mixing a batch of material differ for the three manufacturers.
Use
α =...
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