Question
In: Statistics and Probability
In developing patient appointment schedules, a medical center wants to estimate the mean time that a...
In developing patient appointment schedules, a medical center
wants to estimate the mean time that a staff
member spends with each patient. How large a sample should be taken
if the desired margin of error is two minutes at a 95%
level of confidence? How large a sample should be taken
for a 99% level of confidence? Use a planning
value for the population standard deviation of 7
minutes.
95% Confidence (to the nearest whole number): __________
99% Confidence (to the nearest whole number): __________
Show in Excel how to do it.
Solutions
orchestra answered 2 years agoRelated Solutions
In developing patient appointment schedules, a medical center wants to estimate the mean time that a...
In developing patient appointment schedules, a medical center
wants to estimate the mean time that a staff member spends with
each patient. How large a sample should be taken if the desired
margin of error is two minutes at a 95% level of confidence? How
large a sample should be taken for a 99% level of confidence? Use a
planning value for the population standard deviation of 7
minutes.
95% Confidence (to the nearest whole number) :
99% Confidence (to...
In developing patient appointment schedules, a medical center wants to estimate the mean time that a...
In developing patient appointment schedules, a medical center
wants to estimate the mean time that a staff member spends with
each patient. How large a sample should be taken if the desired
margin of error is two minutes at a 95% level of confidence? How
large a sample should be taken for a 99% level of confidence? Use a
planning value for the population standard deviation of 7 minutes.
95% Confidence (to the nearest whole number): 99% Confidence (to
the...
A medical center wants to determine the mean duration of human pregnancy. A sample of 49...
A medical center wants to determine the mean duration of human
pregnancy. A sample of 49 pregnancies showed a sample mean = 282
days with sample standard deviation s = 12 days. Create a
confidence interval at 90% confidence for the population
mean.
A nurse in charge of Maternity Department of a hospital wants to estimate the mean time...
A nurse in charge of Maternity Department of a hospital wants to
estimate the mean time (in minutes) between a pregnant woman going
into labor and delivery. The nurse measures delivery time of a
random sample (n) of 25 women and finds a mean of 42 minutes with
standard deviation of 6.1 minutes. Based on these findings, the
nurse reports that the time of delivery of 90% of the cases would
be between ___ and ___ minutes.
a. (30.0,40.2)
b....
A research council wants to estimate the mean length of time (in minutes) that the average...
A research council wants to estimate the mean length of time (in
minutes) that the average U.S. adult spends watching television
using digital video recorders (DVR’s) each day. To determine the
estimate, the research council takes random samples of 35 U.S.
adults and obtains the following times in minutes.
24
27
26
29
33
21
18
24
23
34
17
15
19
23
25
29
36
19
18
22
16
45
32
12
24
35
14
40
30
19
14...
A research council wants to estimate the mean length of time (in minutes) that the average...
A research council wants to estimate the mean length of time (in
minutes) that the average U.S. adult spends watching television
using digital video recorders (DVR’s) each day. To determine the
estimate, the research council takes random samples of 35 U.S.
adults and obtains the following times in minutes.
24
27
26
29
33
21
18
24
23
34
17
15
19
23
25
29
36
19
18
22
16
45
32
12
24
35
14
40
30
19
14...
You work on a medical/surgical floor at a county medical center. There is a patient on...
You work on a medical/surgical floor at a county medical center.
There is a patient on your floor who had a stroke, and his wife is
his power of attorney. The patient’s stroke was mild and his
cognitive functions were not affected by the stroke (he is oriented
times 3). He has been on the unit for 3 weeks. Early in his
hospitalization his hemoglobin was found to be 6.0g. The patient’s
wife is a Jehovah’s Witness; however, the patient...
An advertising executive wants to estimate the mean amount of time that consumers spend with digital...
An advertising executive wants to estimate the mean amount of
time that consumers spend with digital media daily. From past
studies, the standard deviation is estimated as 42 minutes.
A. What sample size is needed if the executive wants to be 90%
confident of being correct to within plus or minus 4 minutes?
B. If 99% confidence is desired, how many consumers need to be
selected?
A publisher wants to estimate the mean length of time (in minutes) all adults spend reading...
A publisher wants to estimate the mean length of time (in
minutes) all adults spend reading newspapers. To determine this
estimate, the publisher takes a random sample of 15 people and
obtains the results below. From past studies, the publisher
assumes sigma is 1.5 minutes and that the population of times is
normally distributed. 10 9 10 6 10 8 9 8 12 11 11 10 12 9 12
Construct the 90% and 99% confidence intervals for the population
mean....
The Buffalo, New York, Chamber of Commerce wants to estimate the mean time workers who are...
The Buffalo, New York, Chamber of Commerce wants to estimate the
mean time workers who are employed in the downtown area spend
getting to work. A sample of 15 workers reveals the following
number of minutes spent traveling.
14
24
24
19
24
7
31
20
26
23
23
28
16
15
21
Click here for the Excel Data File
Develop a 98% confidence interval for the population mean.
(Round your answers to 2 decimal places.)
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