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On the basis of data provided by a Romac salary survey, the variance in annual salaries forseniors in public accounting firms is approximately 2.1 and the variance in annual salaries for managers in public accounting firms is approximately 11.1. The salary data wereprovided in thousands of dollars. Assuming that the salary data were based on samplesof 25 seniors and 26 managers, test the hypothesis that the population variances in thesalaries are equal. At a .05 level of significance, what is your conclusion?
Bench Inc., an equipment manufacturer, leased a machine to Unicycle Company on January 1, 2014. The lease is for a 6-year period and requires equal annual payments of $41,747 at the beginning of each year.
a project has the following cash flows. what is the internal rate of return? year 0 1 2 3 cash flow -121000 68150 42200
X2 is college board score (range 200-800). Use the multiple regression equation to predict college gpa for a high school gpa of 3.6 and a college board score of 600.
Given any of these hands, you are allowed to roll again any dice that unmatched. Find your repective chances of improving your hand for the different initial holding (ignoring "improvements" such as turning (KKKQJ) to (KKKA9).
suppose that prices of a certain model of new homes are normally distruted with a mean of 142000 and a standard
If we know that the length of time it takes a college student to find a parking spot in library parking lot follows a normal distribution with mean of 3.5 minutes and a standard deviation of 1 minute, determine the probability that a randomly sele..
in case of emergency i need a fully charged battery for my flashlight. i find many batteries that i bought one year
Calculate the probability that a randomly selected egg weights between 62.5 g and 68.75 g. Think of cartons of such eggs as SRSs of size 12 from the population of all eggs.
Nestling mass and nest humidity. Researchers investigated the relationship between nestling mass, measured in grams, and nest humidity index, measured as the ratio of total mass of water in the nest divided by nest dry mass, for two different grou..
The sat scores attainted by the students in nyc are approximately normally distributed with a mean of 500 and a standard deviation of 80. Find the percentage of students who score less than 700.
What are the null and alternative hypothesis? What is the decision rule or at what value would you reject H0? What is the calculated test statistic?
X1 and X2 are independent identically distributed random variables with expected value E[X] and variance Var[X].
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