MBA Prepworks – BMAS 2024-2025. Real Questions with Correct, Verified Answers. Graded A+, Exams of Mathematics

Download MBA Prepworks – BMAS 2024-2025. Real Questions with Correct, Verified Answers. Graded A+ and more Exams Mathematics in PDF only on Docsity! MBA Prepworks – BMAS 2024-2025. Real Questions with Correct, Verified Answers. Graded A+ A bernoulli trial is an event with two or more possible outcomes - ANSFalse A coefficient of determination of .94 for a regression analysis would indicate - ANS94 percent of the variation is explained by the regression equation A correlation coefficient of -2 means that as x goes up, so does y - ANSFalse A decision node is shown as a square - ANSTrue A decision tree is a graphic representation of a problem - ANSTrue A decision tree is constructed from left to right with the event and decision nodes in chronological order - ANSTrue A distribution that is not normal distribution still has a standard deviation - ANSTrue A low t-ratio for the coefficient of an independent variable is a concern because it indicates that the true coefficient may be 0 or close to zero - ANSTrue A multiple regression is limited to one independent variable - ANSFalse A point of uncertainity is represented by a circle - ANSTrue A regression analysis attempts to find the line through a scatter of data points which minimizes the sum of the squared deviations of the points from the line - ANSTrue A regression equation can have a negative coefficient of correlation, but a positive coefficient of determination - ANSTrue A trend line will give reliable forecasts for several periods ahead of the current period - ANSFalse A variable cost is one the will be incurred regardless of how the level of production varies - ANSfalse A weighted moving average having the early periods weighted more heavily - ANSis less responsive to recent demand changes An advertising firm has five prospective clients whose business it is trying to attract. The managing partner is considering offering these clients reduced rates on media time she has purchased. She reasons that each client is just as likely not to sign with the firm given these circumstances. The best tool to use to determine the probability that at least one client will sign is - ANSbinomial distribution an appliance manufacturer's total costs are equal to its fixed costs plus its monthly rent - ANSFalse An appliance manufacturer's total costs are equal to its fixed costs plus its monthly rent - ANSFalse An independent variable has a coefficient of 2.9 and a standard deviation of .8. What is the T-ratio, given to the third decimal place? - ANS3.625 An r^2 of .5 means that as x goes up, y goes down and vice versa - ANSFalse An upward sloping parabola has a maximum point at its vertex - ANSFalse An upward sloping parabola has a maximum point at its vertex - ANSFalse Branches are connected by squares only - ANSFAlse Branches may be connected by circles and squares - ANSTrue Decomposition is the process of making a decision after having analyzed the parts of that decision - ANSFalse Edna's T-Ratio is less than 2 for the constant term in her regression equation. She should be - ANSNot very concerened For the equation 2x - 3y = 6, the x and y intercepts are x=3 and y=2 - ANSTrue I think there is an 80% chance of me passing this exam is an example of a - ANSsubjective probability If the data points in a trend analysis are plotted on a graph, a trend line can be fitted to the data using the least squares method - ANSTrue If the data points in a trend analysis are plotted on a graph, a trend line can be fitted to the data using the weighted average method - ANSFalse If you graphed the data points in a particular time series and a relatively flat, horizontal pattern was observed, the method that should be used to forecast the next point in the series would be: - ANSAn averaging method To separate an unknown variable from its exponent one should - ANSnone of the above To separate an unknown variable from its exponent one should, - ANSmultiply the exponent by its inverse Tracy flips a coin five times. What is the probability of that coin landing tails up exactly two or more of those five times - ANS.8125 Trend analysis is appropraite when a notable change over time can be observed - ANSTrue Unlike regression, trend analysis limits the prediction of the unknown variable to historical levels of the same variable - ANSTrue Using the trend line equation Y' = a + bx you are projecting an average disguised as a point - ANSTrue Weighting factors for a weighted moving average forecast - ANSweight the most recent data heaviest When forecasting data that are arranged in time periods, i.e., a time series analysis, there are two different approaches: trend analysis and averaging - ANSTrue When solving for an unknown variable that has a number preceding it, you will divide both sides of the equation by this number, which is known as the - ANSCoefficient When the alternative with the lowest expected returns are eliminated, you should erase them from a decision diagram - ANSFalse when the following equation holds true, we are at the breakeven level in dollars: Sales - Variable Costs = Fixed costs - ANSTrue When you develop a string of simple averages by adding a data sample at a new period and dropping the oldest data sample you have a: - ANSMoving average Which of the following is a binomial expression? - ANS143x^4 + 78x^4 + 6x^4 + 76 Which of the following is a dummy variable? - ANSShoe color (black or brown) Which of the following is a monomial expression? - ANS143x^4 + 3x^4 Which of the following statements is false? - ANSUsing simple averaging when the data samples have a lot of variability will provide accurate forecasts Which of the following tells us how much variation in the data can be explained by the regression model? - ANScoefficient of determination You can solve for two unknown variables with only one equation - ANSFalse Z-score is (+-) the number of standard deviations that an observation is away from the mena - ANSTrue Z-score is +- the number of standard deviations that an observation is away from the mode - ANSFalse