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Is there a difference in the variation of the yields of different types of investments?The file CDRate contains the yields for a one-year certificate of deposit (CD) and afive-year certificate of deposit (CD), for 23 banks in the United States, as of April 4, 2011.
BankOne-YearFive-YearAIG1.152.20Ally1.242.40American0.852.35Astoria Federal0.752.65Bank of Internet USA1.212.49Centennial0.602.12Colorado federal1.252.30Discover1.202.30First Internet Bank of Indiana1.002.40Goldwater1.242.39Intervest National1.202.39Lone Star0.802.38MetLife1.251.90Nationwide1.202.55newDominion1.162.00Nova0.902.25OneWest1.202.55Salem Five0.602.00State farm0.802.43National Republic Bank of Chicago1.262.27Transportation Alliance1.202.28USAA0.912.25VirtualBank1.112.22
a. For one-year and five-year CDs, separately compute the variance, standard deviation, range, and coefficient of variance.
b. Based on the results of (a), do one-year or five-year CDshave more variation in the yields offered? Explain.
A study describes operating costs for comparable manufacturing plants operating in 15 different U.S. metropolitan areas. From the costs obtained in the study, the following multiple regression equation was developed:
Comparisons were made for specific causes of death between mortality rates in workers and U.S white male mortality rates from 1950-1978.
Calculate all the first and second order inclusion probabilities and find the value of E[n(a)] in two ways
Over the past few years the percentage of students who leave Lakeland College at the endof the first year has increased. Last year Lakeland started a voluntary one-week orientationprogram to help first-year students adjust to campus life.
State the quick rule for a significant correlation and explain its limitations. What sums are needed to calculate a correlation coefficient? What are the two ways of testing a correlation coefficient for significance?
The federal government recently granted funds for a special program designed to reduce crime in high-crime areas. A study of the results of the program in eight high-crime areas of Miami, Florida, yielded the following results.
The distribution of box weights is normally distributed with a mean of 9 ounces and a variance of 0.01 ounces. What is the probability of randomly selecting a box containing less than 8.9 ounces?
You will investigate four different scenarios of population growth also decline in this town. Graph the model as well as investigate it by four different growth models.
a company has observed that there is a linear relationship between indirect labor expense ile in dollars and direct
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
Describing the results of a hypothesis test of two populations or more than two populations. Include the following: Perform the five-step hypothesis test on data pertaining to your selection.
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
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