Question 1) For the following scenario, is the variable is categorical or quanti
ID: 3296127 • Letter: Q
Question
Question 1) For the following scenario, is the variable is categorical or quantitative?
A poll of students at your college is asked how many hours they work at a job while in school.
A.)Categorical
B.) Quantitative
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Question 2)
A random sample of 30 students taking statistics at a community college found the student’s mean GPA to be 3.25. A 95% confidence interval for the mean GPA of all students taking statistics at this college was determined to be (3.07, 3.43). What is the margin of error for this confidence interval?
3.25
0.18
0.36
0.95
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Question 3)
Based on survey results, the proportion of U.S. adults who own at least one Apple product (iphone, ipad, macbook, etc) is 0.42. This point estimate would be unbiased and most accurate if the survey were based on which of the following?
A random sample of 1,000 U.S. adults
A random sample of 1,800 U.S. adults
A random sample of 2,500 U.S. college students
An internet survey posted on TechGuru.com with 3,100 responses
Explanation / Answer
Q1) Answer is Quantitative.
Q2) Given mean = 3.25, lower bound = 3.07
Margin of error = mean - lower bound. = 3.25 - 3.07 = 0.18 ( anwer is option 2)
Q3) A random sample of 1,800 U.S. adults
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