Statistics

1) A test has the following properties: mean = 100, S.D. = 15, and r = .74. An individual has obtained a score of 85 on this test. Compute his or her SEM (standard error of measurement) and determine the scores that would be needed to develop a 95% confidence interval for this specific individual. 2) For the data listed below compute the mean, median, mode, S.D., Z scores for the scores 4 & 7, and t-scores for 1 & 3. Raw scores 5, 4, 3, 7, 1, 3

Regression Analysis

Please review my project that I need to present to class I see that I would Reject Ho on all variables. I would like to state something significant about my work, professor gave 30 data lines no more than 4 variables as a project but did not discuss the Regression portion that much. I would like further detail to put in my attached narrative he did ask that we do the 0 Constant but my NA results did not do much. When I went to the dealership independent variables were difficult to find. The professor did approve the project--but was looking for that--I thought perhaps I could state at the end of the paper what other variables I could have had--he restricted us to a total of 4 if you look at ... click for more

Determining the reorder point and the optimal number of orders and days in a distribution company using the given scenario.

East value Distributors distributes industrial valves and control devices. The Eastern Valve Co. Has an annual demand of 20000 units and cost of $90 per unit. The cost of ordering is $100 per order and inventory-carrying cost is estimated to be 5 percent of the cost of each value. Lead-time is four working days. Determine(assuming 250 working days): The economic order quantity, the reorder point, the optimal number of orders per year, the optimal number of days between any two orders.

Statistics

The Electrocomp Corporation manufactures two electrical products: air conditioner and large fans. The assembly process for each is similar in that both require a certain amount of wiring and drilling. Each air conditioner takes 3 hours of wiring and 2 hours of drilling. Each fan must go through 2 hours of wiring and 2 hours of drilling. During the next production, period 240 hours of wiring time are available and up to 190 hour of drilling time may be used. Each air conditioner sold yields a profit of $25. Each fan assembled may be sold for a profit of $20. Formulate and solve this LP production mix situation to find the best combination of air conditioners and fans that yields the hi... click for more

Help statistics

Michelob conducts a survey of beer drinkers. Michelob wants to determine which markets and methods of advertising would be most efficient for reaching their potential market for Michelob Light. The survey results indicate that of 200 Michelob customers surveyed 138 had bought Michelob Light on at least one occasion in the past month. Of these, 112 had white-collar jobs. Only 8 people with white-collar jobs had not bought Michelob Light. Construct a Cross Tab table using this information to determine if there is a difference n preference for Michelob Light beer between white collar and blue-collar workers. Considering the results of your analysis what advice, would you give to marketing... click for more