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Relationship between cardiovascular disease and type II diabetes.

  1. Suppose a researcher conducts an analysis of the relationship between cardiovascular
    disease and type II diabetes. The basic summary of the findings are presented in the
    following table.
    Pati
    ent
    BMI
    (kg/m2)
    Hypertensi
    on (Y/N)
    Diabet
    es
    Type
    II
    (Y/N)
    Smoking
    status
    (Never,
    Quit,
    Social,
    Current)
    Educat
    ion
    Status
    (<High
    , High,

High)
Alcoh
ol (>2
drinks
a day?
Y/N)
Religious
Background
(Catholic,
Jewish,
Muslim,
Other)
Ethnicity
(AA, W,
A, H,
Other)
A 27 N N Current High Y Other A
C 21 N N Quit High Y Other W
D 28 Y N Social >High N Muslim W
E 36 Y Y Current <High Y Jewish W
A) Describe the following in reference to their status as a variable, observation, or value:
column 3, row 5, column 3/row 2, column 9.
B) Are any of the variables included in the study ordinal? If so, identify the ordinal variables.

  1. Suppose a researcher conducts an experiment to assess the measuring capabilities of a
    new device aimed at detecting the boiling point of a chemical. The chemical has a known
    boiling point of 120 degrees Fahrenheit. His measurement device is tested 10 times, and
    results in the following measurements for boiling point. What can we say about the
    device with regards to its precision, accuracy, and potential bias?
    Measurement Boiling Point (degrees Fahrenheit)
    1 129
    2 137
    3 136
    4 141
    5 139
    6 142
    7 136
    8 127
    9 143
    10 123
  2. A surveyor wants to sample a city for the local Public Health Office in order to assess
    asthma rates annually. In order to get the best estimate for the project, the surveyor first
    decides to sample 2 of 15 census tracts, and then to sample 5 households from each tract.
    Assume there are only 10 households in each tract. The surveyor randomly assigns each
    tract in the city a number 01-15, and each household in each tract a number 01-10. Use
    the following random number table to select each tract, and then each household,
    continuing along the line.
    058791 211403 098746 170528 086401 370614 097810 036418 340514
    A) What kind of sampling strategy is this?
    B) Which census tracts and households will be selected?
  3. Investigators are interested in the relationship between sleep apnea and Alzheimer’s
    disease. In order to more thoroughly understand the relationship, these investigators
    decide to recruit 50 participants with Alzheimer’s and 50 participants without
    Alzheimer’s, and look at their history of sleep apnea.
    A) What type of study design is this?
    B) What are the explanatory and response variables?
    5.
    The following measurements represent the systolic and diastolic blood pressures (mm
    HG) for a group of individuals awaiting confirmation for enrollment in a study
    investigating the efficacy of a new anti-hypertensive medication.
    SYSBP DIASBP
    118 73
    132 81
    147 87
    145 91
    129 73
    126 81
    132 83
    156 97
    164 102
    162 101
    167 103
    121 78
    A) Create a stem-and-leaf plot for both systolic and diastolic blood pressure.
    B) Suppose that Hypertension is categorized by a Systolic blood pressure above 159 mm HG or a
    diastolic blood pressure above 99 mm HG. What is the relative frequency of the potential
    participants with hypertension?

6.
The following table reports the fasting glucose levels of a sample of potential participants in a
research study investigating the efficacy of a new insulin-type drug.
Patient Fasting Glucose
(mg/dL)
Patient Fasting Glucose
(mg/dL)
A 117 A 112
B 125 B 132
C 129 C 118
D 116 D 119
E 134 E 134
F 108 F 126
G 127 G 124
A) Calculate the mean, median, mode, and standard deviation for the group.
B) Are there any potential outliers that may be affecting the statistics calculated in part A?

Sample Solution

he Expansion markets – Is the transformation of global economic activity that advance the means of communication, an example of this is the mobile phone. Due to these technological changes, we have multiple ways to communicate such as text, email, talk or Skype. The mobile phone alone allows quick and simple delivery processes and allows us to perform everyday tasks faster and with less energy and cost. The transformation of politics -. Freedom of capital movement is essential element for the operation of the large European internal market. The liberalisation of payment transactions is a vital complement to the free movement of goods, persons and services. ‘After Brexit: The struggle for socialism in Britain’ (Marsden 2016). Britain is at a turning point in the political life of the UK. The June 23 referendum vote to leave the European Union (EU) has accelerated an economic, political and social crisis, not just here, but throughout Europe and internationally. “In the space of just one day, global markets lost two trillion dollars. Former US Federal Reserve Chairman Alan Greenspan said Brexit would prove to be more serious than the financial crashes of 1987 and 2008” (Marsden 2016). The Emergence of new social and political movements – Globalization affects more than markets and organisations, it is changing the lives of people across the globe and affecting their culture and values. Globalisation represents a distinctive further step as large corporations such as Nestle’, Vodaphone and McDonalds operates in different countries and regions. As these businesses grow larger and more powerful, some commentators and pressure groups grow concerned that their commercial interests can destabilise and harm the economies of individual countries, especially smaller countries in the developing world (Torrington et al 2011). At the same time Counter-movements have developed In the new age of globalization, the repercussions of rising radical transnational social and political Islamist forces have lasting effects on world socio-economic and political strategies. globalization involves socio-cultural, technological, economic, environmental, political
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