Stats Help for College-level Students

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 be ...continues

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 attac ...continues

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(a ...continues

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 o ...continues

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 ...continues

Statistics

Sampling problem

Statistics

Sampling and hypothesis testing

Statistics Problem

For a given data set u=200 and standard deviation =30. What is the probability that the mean of a sample of n=36 would be greater than 208? Less than 195? Between 192 and 210? Not more than 212? Please Explain and illustrate. In addition please draw a normal bell curve so that I can visualize each solution, I learn best that w ...continues

Problem with statistics

I am having problems calculating this trend. Please help I came up with these numbers and I know it is wrong. X totals 10, y totals 472000, xy totals 1205000, x2 totals 30 X=10/3=3.33 Y-472000/3=157333.33 B.)120500-(10)(3.33)(157333.333)/30-(10)(3.33)(3.33) =50427.49 A.) 157333.33-(50427.49)(3.33)=10590.21 ^ Y +10590.21 ...continues

understanding concepts of measurement and measurement scales

I am attempting to understand measurement and measurement scales in order to measure behavior. I am not able to "get" this.in a manner in which I am confident. Below is what I am working with. The amount of motivation of an individual was measured by a self report scale that has 32 items each scaled as shown below: ...continues