Null Hypothesis: No differences between population means. µ1=µ2=µ3 Alternative Hypothesis: At least one pop mean is different from at least one other pop mean. (Can’t use symbols) 3) Numerator of the F statistic measures between groups variance (MSbetween) 4) Denominator of the F statistic measures within groups variance (MSwithin) 6) A priori test: planned ahead of time‚ before you collect data decide on test‚ based on reasoning Post hoc: choose after you look at data; based on data‚ choose
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Standard deviation is the square root of the variance (Gravetter & Wallnau‚ 2013). It uses the mean of the distribution as a reference point and measures variability by considering the distance of each score from the mean. It is important to know the standard deviation for a given sample because it gives a measure of the standard‚ or average‚ range from the mean‚ and specifies if the scores are grouped closely around the mean or are widely scattered (Gravetter & Wallnau‚ 2013). The standard deviation
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TVM Exercises Be sure to use the following format for your answers: TVM Table (X%‚ Xn) Pmt (factor) Answer 1. You invest $5‚000 at 6% compounded annually for 10 years. How much will you have at the end of year 10? FV Table (6%‚ 10n) $5‚000 (1.791) $8‚955 2. You need $200‚000 10 years from now and know of an investment that pays a 10% return. How much do you need to invest today to achieve your goal? PV Table (10%‚ 10n) $200‚000 (0.386) $77‚200 3. You are required to
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Exercise 8: Range/Endurance Givens Conditions: Gross Weight for Beginning of Cruise = 300‚000 lbs Gross Weight at End of Cruise = 200‚000 lbs Altitude = FL350 Standard Conditions Wing Area = 3050 ft2 Wing Span = 156 ft Wing Efficiency = .75 CDp = 0.0119 Twin turbofan engines Figure 2.1 Figure 6.5 Figure 13.2 No need to take into account Temperature Ram Rise 1. Find Equivalent Airspeed‚ True Airspeed‚ and Mach for best range at FL350 and Sea Level at W = 300‚000 lb. (Use Figure 13.2 and Equations
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AP Statistics Chapter 2 Monica AP 1 Senior Class note Eg: I invent a super food for my rabbit that can make her energetic and make her fur shiny. How can I prove that my food is the best food for rabbits? Experimental unit: the single individual (person‚ animal‚ etc.) to which the different treatments are assigned. 兔子 Factor: the explanatory variable 不同的兔粮 Level: a specific value for the factor Response variable: what you measure 毛长得好不好 Treatment:
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Inventory Exercises 1. At Dot Com‚ a large retailer of popular books‚ demand is constant at 32‚000 books per ear. The cost of placing an order to replenish stock is $10 and the annual cost of holding is $4 per book. Stock is received five working days after an order has been placed. No backordering is allowed. Assume 300 working days a year. a. What is Dot Com’s optimal order quantity (EOQ)? b. What is the optimal number of order per year? c. What is the optimal interval (in working days)
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Checkpoint Week One Exercise E9-2 E9-2 Trudy Company incurred the following costs. 1. Sales tax on factory machinery purchased $ 5‚000 2. Painting of and lettering on truck immediately upon purchase 700 3. Installation and testing of factory machinery 2‚000 4. Real estate broker’s commission on land purchased 3‚500 5. Insurance premium paid for first year’s insurance on new truck 880 6. Cost of landscaping on property purchased 7‚200 7. Cost of paving parking lot for
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Drunk Driving Statistics In a study conducted by MADD (Mother’s Against Drunk Driving)‚ during the years 1999 to 2008 there were a total of 2‚050‚132 impaired driving accidents. The total cost of these accidents was an estimated $205.3 billion. That is approximately $6‚221 per Canadian. Broken down annually‚ the estimated cost to Canadians is $20.53 billion‚ or approximately $622 per person per year. Besides the cost‚ fatalities are a massive issue when it comes to driving under the influences
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Fall 2011- August drive MBA SEMESTER 1 MB0040 – STATISTICS FOR MANAGEMENT- 4 Credits (Book ID: B1129) Assignment Set- 1 (60 Marks) Note: Each question carries 10 Marks. Answer all the questions 1. (a) ‘Statistics is the backbone of decision-making’. Comment. [ 5 marks] (b) Give plural meaning of the word Statistics? [ 5 marks] 2. a. In a bivariate data on ‘x’ and ‘y’‚ variance of ‘x’ = 49‚ variance of ‘y’ = 9 and covariance (x‚y) = -17.5. Find coefficient of correlation between ‘x’ and
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Assignment 1 – Writing Exercise Post my Bachelor’s degree‚ having completed about 4 years of work at Nokia‚ the time had come for me to consider joining a full-time M.B.A. program‚ to boost my career further. I felt that the time was right‚ and conducted my research on potential schools‚ globally. Going by information that I read online‚ an email I received from our HR team at Nokia‚ along with some very positive feedback I received from a close friend‚ who is currently enrolled in the E.M.B.A
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