IN ORDER TO IMPLEMENT A SET OF RULES / TUTORIALOUTLET DOT COM IN ORDER TOIMPLEMENTASETOFRULES/TUTORIALOUTLET.COM | Page 28

questions, but must resort to
pure guessing on the remaining five questions,
What is the probability the student will pass the quiz? __________
d. (6 pts) There are five sections of the introductory psychology
course and each section has 100
students. Suppose that none of the students in section 2 studied for the
first quiz. If each of the
students in section 2 answered each of the 10 questions by randomly
selecting one of the four
choices,
What is the expected number of passing quiz scores in section 2‘s
student distribution of
quiz scores? __________
What is the expected value of section 2‘s quiz scores (in
percentages)? __________
What is the standard deviation of the quiz scores (in percentages)?
______________
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In order to implement a DBMS
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In order to implement a DBMS, there must exist a set of rules which
state how the
database system will behave. For instance, somewhere in the DBMS
must be a set of
statements which indicate than when someone inserts data into a row
of a relation, it
has the effect which the user expects. One way to specify this is to use
words to write
an `essay' as to how the DBMS will operate, but words tend to be
imprecise and open to
interpretation. Instead, relational databases are more usually defined
using Relational