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1. A research firm observes that men are twice as likely as women to watch the Super Bowl on television. Does this information represent descriptive statistics or inferential statistics? Why?
2. For each of the following, indicate whether the appropriate variable would be qualitative or quantitative. If you identify the variable as quantitative, indicate whether it would be discrete or continuous.
a. Whether you own a Panasonic television set
b. Your status as either a full-time or a part-time student
c. The number of people who attended your school's graduation last year
d. The price of your most recent haircut
e. Sam's travel time from his dorm to the student union
f. The number of students on campus who belong to a social fraternity or sorority
The following are midterm and ?nal examination test scores for 10 students from a calculus class, wherex denotes the midterm score and y denotes the ?nal score for each student.
How many total subjects should be studied to have 80% power for detecting a reduction of 10 mmHg in SBP due to exercise, assuming a 0.01 type I error and 2-sided alternative hypothesis? Briefly describe the approach you used
Computing the Z scores for the given data and evaluate µ and σ for the population.
what is the standard error of a sampling distribution when ? sigma 24 and n 144?a 20 b .167 c 2.0 d unable to
A company is interested in estimating μ, mean number of days of sick leave taken by its employees. The firm's statistician randomly selects 100 personnel files and notes the number of sick days taken by each employee.
In forestry there appears to be a correlation between the diameter of a tree at breast height and the totol height of the tree. For the following sample of ten white spruces first construct a scatter plot then find the correlation (r) between heig..
you are picking a bouquet of 20 flowers for your mother at random from a garden with 25 coneflowers 35 daisies and 42
This means that you may refer to your textbook, notes, and online course materials, but you must work independently and may not consult anyone.
Suppose all cities are directly connected except B and C are not directly connected. How many different flight plans are available to the salesperson?
the american veterinary association claims that the annual cost of medical care for dogs averages 100 with a standard
Using an investment game, the study demonstrated that people who inhaled oxytocin were more likely to give their money to a trustee compared to people who inhaled an inactive placebo. For this experimental study, identify the independent variable a..
a student has 40 chance of getting a scholarship. consider a group of 10 students.a. what is the probability that
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