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In: Computer Science
Students interact with databases daily but often do not recognize that fact. Ask students whether they...
- Students interact with databases daily but often do not recognize that fact. Ask students whether they have used Google or another search engine recently. Have students purchased anything online? Did they use the online library catalog? How have they interacted with any databases in the previous 24 hours? Write the list on the board to emphasize the importance that databases play in our daily lives.
- Choose one of the three databases in this chapter. Ask students to provide other data items that could be included. For example, the OWNER table in the Solmaris Condominium Group could include telephone number. Then, ask the students how the data items should be stored; for example, should phone number include area code? Why or why not?
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Discuss how you interact with databases in your daily routine. How often do you access your...
Discuss how you interact with databases in your daily routine.
How often do you access your own personal info and stored data,
enter your personal information into new databases, browse content
in a database etc?
A random sample of 100 students at a high school was asked whether they would ask...
A random sample of 100 students at a high school was asked
whether they would ask their father or mother for help with a
homework assignment in science. A second sample of 100 different
students was asked the same question in history. If 46 students in
the first sample and 47 students in the second sample replied that
they turned to their mother rather than their father for help, test
the claim whether the difference between the proportions is due...
In a national survey college students were asked, "How often do you wear a seat belt...
In a national survey college students were asked, "How often do
you wear a seat belt when riding in a car driven by someone else?"
The response frequencies appear in the table to the right. (a)
Construct a probability model for seat-belt use by a passenger.
(b) Would you consider it unusual to find a college student who
never wears a seat belt when riding in a car driven by someone
else?
Response
Frequency
Never
131
Rarely
331
Sometimes
524...
Do blondes have more fun? Walking around downtown saturday night, you ask people whether they had...
Do blondes have more fun? Walking around downtown saturday
night, you ask people whether they had a boring time, a good time,
or a great time that night, and note their hair color. Out of 80
blondes: 20 had a boring night, 20 had a good night, and 40 had a
great night. out of 120 non-blondes: 30 had a boring night, 40 had
a good night, and 50 had a great night. What is the chi-square
value for this...
19. A health educator was interested in determining whether college students at her college really do...
19. A health educator was interested in determining whether
college students at her college really do gain weight during their
freshman year. A random sample of 5 college students was chosen and
the weight for each student was recorded in August (the beginning
of the freshman year) and May (the end of the freshman year). Does
the data below suggest that college students gain weight during
their freshman year? The health educator wants to use a 0.05
significance level to...
A health educator was interested in determining whether college students at her college really do gain...
A health educator was interested in determining whether college
students at her college really do gain weigh during their freshman
year. A random sample of 5 college students was chosen and the
weight for each student was recorded in August and May. Does the
data below suggest that college students gain weight during their
freshman year? The health educator wants to use a 0.05 significance
level to test the claim. Weight (pounds) Student August May 1 2 3 4
5...
Suppose we want to do our own test of whether the way students take notes affects...
Suppose we want to do our own test of whether the way students
take notes affects their memory for material (like the Mueller and
Oppenheimer study), but we have a three condition experiment, where
students are randomly assigned to: 1) a "b.y.o." room where
students bring in their backpacks and can use whatever device
(laptop/ipad, paper notebook, livescribe pen) and whatever style of
note-taking / note-taking sofware they think works best for them;
2) a "laptop" room where students can...
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