the time of Florence Nightingale? From the census of 1851, we have the following information. 20-29 24.5 50-59 54.5 60-69 64.5 30-39 40-49 Age range (yr) Midpoint x Percent of 70-79 80+ 34.5 44.5 74.5 84.5 nurses 5.7% 9.7% 19.5% 29.2% 25.0% 9.1% 1.8% (a) Using the age midpoints x and the percent of nurses, do we have a valid probability distribution? Explain. (b) Create a bar graph for the probability distribution of part (a). (c) Find the probability that a British nurses selected at random in 1851 was 60 years of age or older. (d) Compute the expected age u of a British nurses contemporary to Florence Nightingale. (e) Comnute the etandard deviation s for ages of nursee ehown in the distribution
the time of Florence Nightingale? From the census of 1851, we have the following information. 20-29 24.5 50-59 54.5 60-69 64.5 30-39 40-49 Age range (yr) Midpoint x Percent of 70-79 80+ 34.5 44.5 74.5 84.5 nurses 5.7% 9.7% 19.5% 29.2% 25.0% 9.1% 1.8% (a) Using the age midpoints x and the percent of nurses, do we have a valid probability distribution? Explain. (b) Create a bar graph for the probability distribution of part (a). (c) Find the probability that a British nurses selected at random in 1851 was 60 years of age or older. (d) Compute the expected age u of a British nurses contemporary to Florence Nightingale. (e) Comnute the etandard deviation s for ages of nursee ehown in the distribution
Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.2: Graphs Of Equations In Two Variables; Circles
Problem 111E
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Transcribed Image Text:#12 History: Florence Nightingale What was the age distribution of nurses in Great Britain at
the time of Florence Nightingale? From the census of 1851, we have the following information.
Age range (yr)
Midpoint x
20-29
24.5
30-39
34.5
40-49
44.5
50-59
54.5
60-69
64.5
70-79
74.5
80+
84.5
Percent of
5.7%
9.7%
19.5%
29.2%
25.0%
9.1%
1.8%
nurses
(a) Using the age midpoints x and the percent of nurses, do we have a valid probability
distribution? Explain.
(b) Create a bar graph for the probability distribution of part (a).
(c) Find the probability that a British nurses selected at random in 1851 was 60 years of age
or older.
(d) Compute the expected age u of a British nurses contemporary to Florence Nightingale.
(e) Compute the standard deviation o for ages of nurses shown in the distribution.
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