Referring to Table 14-9, what is the value of the coefficient of multiple
determination?
TABLE 14-9
You decide to predict gasoline prices in different cities and towns in
the United States for your term project. Your dependent variable is
price of gasoline per gallon and your explanatory variables are per
capita income and the number of firm that manufacture automobile
parts in and around the city. You collected data of 32 cities and
obtained a regression sum of squares SSR= 122.8821. Your computed
value of standard error of the estimate is 1.9549.
Referring to Table 14-10, the standard error of the estimate is
________.
TABLE 14-10
You worked as an intern at We Always Win Car Insurance Company
last summer. You notice that individual car insurance premiums
depend very much on the age of the individual and the number of
traffic tickets received by the individual. You performed a regression
analysis in EXCEL and obtained the following partial information:
TABLE 5-7
There are two houses with almost identical characteristics available for investment in
two different neighborhoods with drastically different demographic composition. The
anticipated gain in value when the houses are sold in 10 years has the following
probability distribution:
Referring to Table 5-7, if your investment preference is to maximize your expected
return while exposing yourself to the minimal amount of risk, will you choose a
portfolio that will consist of 10%, 30%, 50%, 70%, or 90% of your money on the house
in neighborhood A and the remaining on the house in neighborhood B?
TABLE 17-11
A logistic regression model was estimated in order to predict the probability that a
randomly chosen university or college would be a private university using information
on mean total Scholastic Aptitude Test score (SAT) at the university or college, the
room and board expense measured in thousands of dollars (Room/Brd), and whether the
TOEFL criterion is at least 550 (Toefl550 = 1 if yes, 0 otherwise.) The dependent
variable, Y, is school type (Type = 1 if private and 0 otherwise).
Referring to Table 17-11, what is the p-value of the test statistic when testing whether
SAT makes a significant contribution to the model in the presence of the other
independent variables?
A university dean is interested in determining the proportion of students who receive
some sort of financial aid. Rather than examine the records for all students, the dean
randomly selects 200 students and finds that 118 of them are receiving financial aid.
Use a 90% confidence interval to estimate the true proportion of students who receive
financial aid.
TABLE 12-6
According to an article in Marketing News, fewer checks are being written at the
grocery store checkout than in the past. To determine whether there is a difference in
the proportion of shoppers who pay by check among three consecutive years at a 0.05
level of significance, the results of a survey of 500 shoppers in three consecutive years
are obtained and presented below.
Referring to Table 12-6, what is the value of the critical range for the Marascuilo
procedure to test for the difference in proportions between year 1 and year 3 using a
0.05 level of significance?
TABLE 5-10
An accounting firm in a college town usually recruits employees from two of the
universities in town. This year, there are fifteen graduates from University A and five
from University B and the firm decides to hire six new employees from the two
universities.
Referring to Table 5-10, what is the probability that at least one of the new employees
will be from University A?