Reference no: EM13946411
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In the course, go to Unit 4 -> Instructor Graded Project -> StatCrunch to access the MM207 Student Data Set. When the page loads you will need to click on Data Set on the left side of the page. You do not need a StatCrunch ID or a password to access the data set; simply click the on Data Set to load the data file.
1 A recent report on the weekly news presented the findings of a study on the effectiveness of Onglyza, along with diet and exercise, for treating diabetes.
2 A Gallop poll surveyed 1,018 adults by telephone, and 22% of them reported that they smoked cigarettes within the past week.
3 A recent study of 460 drivers age 70 and over by the National Highway Traffic Safety Administration reported that 75% of those drivers had uncorrected vision problems.
4 What type of sampling procedure was used to collect the data in the MM207 Student Data Set?
5 From the MM207 Student Data Set identify one variable that is discrete and one variable that is continuous. Explain your reasoning. How do you know?
6. From the MM207 Student Data Set identify the following:
a) A variable measured at the nominal level of measurement.
b) A variable measured at the ratio level of measurement.
c) A variable measured at the ordinal level of measurement.
7 What is the approximate percentage of students represented in the data set who are between the ages of 29 and 45 inclusive?
8. Assume that you are preparing a report on MM207 statistics students at Kaplan University to present to the Kaplan Board of Trustees. Prepare an appropriate graphical representation for each of the following variables.
a) The different majors of students taking MM207.
b) The number of hours spent on school work by students in MM207.
9. Using the range rule of thumb estimate the standard deviation for the number of credit hours students in this sample are taking and the shoe sizes of the females in the class. Then using StatCrunch compute the actual standard deviation. Compare the results.
a) Does the range rule of thumb overestimate or underestimate the standard deviation for number of credit hours?
b) Does the range rule of thumb overestimate or underestimate the standard deviation for shoe sizes of females?
c) How does the shape of the distribution impact what you conclude?
Attachment:- bk.xlsx
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