Question
In: Statistics and Probability
The following frequency table summarizes the distances in miles of 100 patients from a regional hospital....
The following frequency table summarizes the distances in miles of 100 patients from a regional hospital.
Distance Frequency
0-4 20
4-8 25
4-12 30
12-16 20
16-24 5
Calculate the sample variance and standard deviation for this data (since it is a case of grouped data- use group or class midpoints in the formula in place of X values, and first calculate the sample mean)
Solutions
Expert Solution
The grouped data information provided, with the corresponding frequencies is shown in the table below:
Please note that the third class "4-12" seems to be wrong. It should have been 8-12. Please cross-check.
Let me know in the comments if anything is not clear. I will reply ASAP! Please do upvote if satisfied!
orchestra answered 1 year agoRelated Solutions
3. The following frequency table summarizes the distances in miles of 120 patients from a regional...
3. The following frequency table summarizes the distances in
miles of 120 patients from a regional hospital. Distance Frequency
0-4 40 4-8 30 8-12 20 12-16 20 16-20 10 Calculate the sample
variance and standard deviation for this data (since it is a case
of grouped data- use group or class midpoints in the formula in
place of X values, and first calculate the sample mean).
The following frequency table summarizes a set of data. What is the five-number summary? Value Frequency...
The following frequency table summarizes a set of data. What is
the five-number summary?
Value
Frequency
3
1
5
2
6
2
7
1
8
3
10
3
11
1
12
2
The following frequency table summarizes a set of data. What is the five-number summary? Value Frequency...
The following frequency table summarizes a set of data. What is
the five-number summary?
Value
Frequency
9
3
10
3
11
1
13
3
14
1
15
5
16
1
17
1
18
1
The following frequency table summarizes a set of data. What is the five-number summary? Value Frequency...
The following frequency table summarizes a set of data. What is
the five-number summary?
Value
Frequency
1
5
2
2
3
1
7
1
8
1
17
1
18
5
19
3
20
1
21
1
23
1
26
1
Select the correct answer below:
Min
Q1
Median
Q3
Max
1
7
8
21
26
Min
Q1
Median
Q3
Max
1
2
6
19
26
Min
Q1
Median
Q3
Max
1
3
22
21
26
Min
Q1
Median
Q3
Max...
The following frequency table summarizes the number of hours worked by a sample of 120 students...
The following frequency table summarizes the number of hours
worked by a sample of 120 students in the same week. Hours worked
by students Class (hours) Frequency (0, 10] 10 (10, 20] 60 (20, 30]
40 30 or more 10 Total 120 Show/hide advanced buttonsParagraph
stylesBoldItalicUnordered listOrdered listLinkUnlinkInsert or edit
imageInsert or edit an audio/video fileRecord audioRecord
videoManage files
A) How many students worked more than 10 hours but less than or
equal to 30 hours?
B) What is the...
The following frequency table summarizes the ages of 50 customers for both shopping stores, Customer ages...
The following frequency table summarizes the ages of 50
customers for both shopping stores,
Customer ages
Frequency – Macy’s
Frequency – J.C Penny’s
15-23
8
2
24-32
19
11
33-41
8
7
42-50
6
11
51-59
3
11
60-68
6
8
50
50
Compute, the mean and standard deviation per customer age group
for both shopping stores in excel
Distinguish the customers for each store per the results
The table below summarizes baseline characteristics of patients participating in a clinical trial. a) Are there...
The table below summarizes baseline characteristics of patients
participating in a clinical trial. a) Are there any statistically
significant differences in baseline characteristics between
treatment groups? Justify your answer. Characteristic Placebo (n =
125) Experimental ( n =125) P Mean (+ Sd. Age 54 + 4.5 53 + 4.9
0.7856 % Female 39% 52% 0.0289 % Less than High School Education
24% 22% 0.0986 % Completing High School 37% 36% % Completing Some
College 39% 42% Mean (+ Sd. Systolic...
The table below summarizes baseline characteristics of patients participating in a clinical trial. a) Are there...
The table below summarizes baseline characteristics of patients
participating in a clinical trial. a) Are there any statistically
significant differences in baseline characteristics between
treatment groups? Justify your answer.
b) Write the hypotheses and the test statistic used to compare
ages between groups. (No calculations – just H0, H1 and form of the
test statistic).
c) Write the hypotheses and the test statistic used to compare %
females between groups. (No calculations – just H0, H1 and form of
the...
The table below summarizes baseline characteristics of patients participating in a clinical trial. a) Are there...
The table below summarizes baseline characteristics of patients
participating in a clinical trial. a) Are there any statistically
significant differences in baseline characteristics between
treatment groups? Justify your answer.
Characteristic
Placebo (n = 125)
Experimental ( n =125)
P
Mean (+ SD) Age
54 + 4.5
53 + 4.9
0.7856
% Female
39%
52%
0.0289
% Less than High School Education
24%
22%
0.0986
% Completing High School
37%
36%
% Completing Some College
39%
42%
Mean (+ SD) Systolic...
he following table gives the frequency distribution of the total miles driven during 2015 by a...
he following table gives the frequency distribution of
the total miles
driven during 2015 by a sample of 92 car owners.
Miles Driven (in thousand) Frequency
0 to less than 5 7
5 to less than 10 26
10 to less than 15 59
(a) (3 points) Write down the columns that show the values for m,
mf
and m2
f. Then compute the sample mean and the sample standard
deviation for the given data.
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