Question

7. A group of diners were asked how much they would pay for a
meal. Their responses were: $7.50, $25.00, $10.00, $10.00, $7.50,
$8.25, $9.00, $5.00, $15.00, $8.00, $7.25, $7.50, $8.00, $7.00.
$12.00. a. find the standard deviation of this data. Explain what
the mean and standard deviation tell you about how much the group
of diners would pay for a meal. b. Calculate the five-number
summary for this data. c. Calculate the range and IQR for this
data. d. Create a boxplot for the data

8. Studies are often done by pharmaceutical companies to determine
the effectiveness of a treatment. Suppose that a new cancer drug is
currently under study. Of interest is the average length of time in
months patients live once starting the treatment. Two researchers
each follow a different set of 40 cancer patients throughout their
treatment. The following data (in months) are collected. a. Find
the standard deviation of each group. b. Calculate the 5-number
summary for each group. c. Calculate the range and IQR for each
group. d. Create side-by-side boxplots and compare and contrast the
two groups.

*Researcher 1:* 3, 4, 11, 15, 16, 17, 22, 44, 37, 16, 14,
24, 25, 15, 26, 27, 33, 29, 35, 44, 13, 21, 22, 10, 12, 8, 40, 32,
26, 27, 31, 34, 29, 17, 8, 24, 18, 47, 33, 34

*Researcher 2:* 3, 14, 11, 5, 16, 17, 28, 41, 31, 18, 14,
14, 26, 25, 21, 22, 31, 2, 35, 44, 23, 21, 21, 16, 12, 18, 41, 22,
16, 25, 33, 34, 29, 13, 18, 24, 23, 42, 33, 29

** Please show work and if any can be done in excel

Answer #1

. Studies are often done by pharmaceutical companies to
determine the effectiveness of a treatment program. Suppose that a
new AIDS antibody drug is currently under study. It is given to
patients once the AIDS symptoms have revealed themselves. Of
interest is the average length of time in months patients live once
starting the treatment. Two researchers each follow a different set
of 40 AIDS patients from the start of treatment until their deaths.
The following data (in months) are...

Studies are often done by pharmaceutical companies to determine
the effectiveness of a treatment program. Suppose that a new AIDS
antibody drug is currently under study. It is given to patients
once the AIDS symptoms have revealed themselves. Of interest is the
average length of time in months patients live once starting the
treatment. Two researchers each follow a different set of 40 AIDS
patients from the start of treatment until their deaths. The
following data (in months) are collected....

Studies are often done by pharmaceutical companies to determine
the effectiveness of a treatment program. Suppose that a new AIDS
antibody-drug is currently under study. It is given to patients
once the AIDS symptoms have revealed themselves. Of interest is the
average length of time in months patients live once starting the
treatment. Two researchers each follow a different set of 40 AIDS
patients from the start of treatment until their deaths. The
following data (in months) are collected\
Researcher...

Dataset:
Husband Wife
53 50
38 34
46 44
30 36
31 23
26 31
29 25
48 51
65 46
29 26
28 23
29 32
25 22
22 21
21 24
43 50
24 27
38 33
33 26
35 29
40 29
27 25
27 24
49 38
48 39
27 27
26 24
40 34
35 37
21 26
32 39
30 28
60 52
36 40
25 23
66 55
52 34
41 40
43 ...

The results of a sample of 372 subscribers
toWiredmagazine shows the time spent using the Internet
during the week. Previous surveys have revealed that the population
standard deviation is 10.95 hours. The sample data can be found in
the Excel test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
Develop a 95% confidence interval for the population mean
If the editors of Wiredwanted to have the...

____________________________________________
The results of a sample of 372 subscribers to Wired
magazine shows the time spent using the Internet during the week.
Previous surveys have revealed that the population standard
deviation is 10.95 hours. The sample data can be found in the Excel
test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
____________________________________________
Develop a 95% confidence interval for the population mean
____________________________________________
If the editors...

to look at 36 weeks instead of 20 weeks. His quality improvement
team provided him with the data below after an “intervention” was
introduced in week 20. Calculate the upper and lower control limits
and then construct a control chart. Display your chart.
Question: Using the rules for detecting special
causes, can you detect any special causes in this case? If so, what
special causes can you detect? What does this mean? Was the
intervention successful in reducing the delays?...

6. Using the class data (see Blackboard file - "Class Survey
Data - PSS-10 and GAS") calculate the correlation between the GAS –
Goal disengagement and the GAS – Goal reengagement scores. Write
the results in a statistical statement.
7. Using the class data calculate the correlation between the
GAS – Goal disengagement and the PSS-10 scores. Write the results
in a statistical statement.
8. Using the class data calculate the correlation between the
GAS – Goal reengagement scores and...

In a recent survey, a group of teenagers was asked to indicate
how many hours they spent playing video games in a typical week.
After dividing the data by gender, researchers are left with the
following data:
BY HAND: Calculate the mean hours spent
playing video games and the standard deviation for both males (n =
30) and females (n = 22)
BY HAND: compare the means and see if there is
a significant difference (with 95% confidence, z =...

using the following data set, create a box plot for
this question.
17, 32, 27, 14, 18, 34, 16, 41, 28, 24, 40, 26, 23,
31, 37, 21, 30, 28

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