Reference no: EM13105892
1. State the main points of the Central Limit Theorem for a mean.
2. Why is population shape of concern when estimating a mean? What does sample size have to do with it?"
(Doane and Seward, p. 338)
3. A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were
3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477
a) Construct a 90 percent confidence interval for the true mean weight.
b) What sample size would be necessary to estimate the true weight with an error of ±0.03 grams with 90 percent confidence?
c) Discuss the factors which might cause variation in the weight of Tootsie Rolls during manufacture.
4. In 1992, the FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive.
a) Construct a 95 percent confidence interval for the population proportion of positive drug tests.
b) Why is the normality assumption not a problem, despite the very small value of p?
|
Discuss the cost containment measures
: What are three cost-containment measures that were implemented through the collective bargaining process in 1985? Why were these considered milestones in curtailing health benefit costs to employees?
|
|
Explain confidence interval
: Explain why a confidence interval for a predictor coefficient is equivalent to a 2-tailed test of significance?
|
|
How critical thinking utilized to recognize cause of problem
: Write down 1250-1750 word paper describing how critical thinking is used to recognize causes of problems or issues for this population. Focus on.
|
|
What is the radius of the circle
: At t1 = 5.00 s, the acceleration of a particle moving at constant speed in counterclockwise circular motion is a1=(2m/s^2)i + (9m/s^2)j At t2 = 6.00 s (less than one period later), the acceleration is a2= (9m/s^2)i - (2m/s^2)j The period is more t..
|
|
Normal distribution and confidence intervals
: State the main points of the Central Limit Theorem for a mean. Why is population shape of concern when estimating a mean? What does sample size have to do with it?"
|
|
Select the appropriate variables to graph on each axis
: You have two small 2.0- balls that have been given equal but opposite charges, but you don't know the magnitude of the charge. To find out, you place the balls a distance apart on a slippery horizontal surface, release them, and use a motion detec..
|
|
Solving linear program using the decomposition principle
: Solve the following linear program using the decomposition principle: minimize z = ?2x1 ? 5x2 subject to x1 + 2x2 = 13.5 x1 + 3x2 = 18.0 x1 ? 9 x2 ? 5 x1, x2 ? 0.
|
|
Determining confidence interval-test of hypothesis
: In an article in the Journal of Management, Morris, Avila and Allen studied innovation by surveying firms to find the number of new products introduced by the firms.
|
|
Finding initial basic feasible solution
: Consider the cutting stock problem that arises when a company manufactures sheets of standard width 100 and has commitments to supply 40 sections of width 40, 60 sections of width 24, and 80 sections of width 18.
|