Question 1. The data in the following table shows the closing price ofthe three major stock markets on July 29, 2009
Classify the data as either time-series or cross-sectional. Support your answer.:
|
Stock Market |
Closing Price |
|
Dow Jones Industrial |
9,070 |
|
NASDAQ |
1,968 |
|
S&P 500 |
975 |
Question 2.
In a particular collegeclass, there are male and female students. Some students have long hair andsome students have short hair. Write the symbols for the probabilities of theevents for parts a through j. (Note that you cannot find numerical answershere. You were not given enough information to find any probability values yet;concentrate on understanding the symbols.)
Let F bethe event that a student is female.
Let M bethe event that a student is male.
Let S bethe event that a student has short hair.
Let L bethe event that a student has long hair.
a. Theprobability that a student does not have long hair.
b. Theprobability that a student is male or has short hair.
c. Theprobability that a student is a female and has long hair.
d. Theprobability that a student is male, given that the student has long hair.
e. Theprobability that a student has long hair, given that the student is male.
f. Of allthe female students, the probability that a student has short hair.
g. Of allstudents with long hair, the probability that a student is female.
h. Theprobability that a student is female or has long hair.
i. Theprobability that a randomly selected student is a male student with shorthair.
j. Theprobability that a student is female.