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9 Questions returned
No. & Date AskedQuestion
# 501 :: 11/7/08
Question 501 has been Answered
In a survey of adults, 68% thought that DNA test for identifying an individual were very reliable. You randomly select 24 adults and ask each if he or. . .

BINOMDIST, Binomial Probability, Continuity Correction, Normal Approximation, Normal Approximation to Binomial

# 467 :: 10/7/08
Question 467 has been Answered
The Web-based company Oh Baby! Gifts has a goal of processing 95 percent of its orders on the same day they are received. If 485 out of the next 500 o. . .

1-Proportion Test, Normal Approximation

# 399 :: 9/20/08
Question 399 has been Answered
When you calculate CIs for time on task, I notice that you use the critical value from the t-distribution (TINV(0.05, degrees_of_freedom)). But when y. . .

exact interval, Binomial Probability, TINV, Adjusted Wald, Wald Interval, Normal Approximation, Small Sample

# 388 :: 9/17/08
Question 388 has been Answered
In Dallas, some fire trucks were painted yellow (instead of red) to heighten their visibility. During a test period, the fleet of red fire trucks made. . .

2-proportion test, Binomial Probability, Normal Approximation

# 368 :: 9/5/08
Question 368 has been Answered
in a random sample of 200 person of a town 120 are found to the tea drinker.In a random sample of 500 person of another town 240 are found to be tea d. . .

Normal Approximation, 2-proportion test, Binomial Probability

# 350 :: 8/16/08
Question 350 has been Answered
A robot, when working properly, produces 5% or less defective items. whenever the robot produces more than 5% defective items, i needs repair. A rando. . .

Continuity Correction, Normal Approximation, binomial, 1-Sample Proportion Test

# 319 :: 8/6/08
Question 319 has been Answered
A machine cuts circular filters from large rolls of material. If 7.3% of the filters fail to meet specifications, use the normal approximation to the . . .

binomial, Binomial Probability, Normal Approximation, Continuity Correction

# 269 :: 7/9/08
Question 269 has been Answered
A classical experiment in extrasensory perception (ESP) consists of asking a subject to tell, without looking, the suit of each card in a deck of Zene. . .

Z-Score, Binomial Probability, Normal Approximation, binomial, BINOMDIST

# 209 :: 5/29/08
Question 209 has been Answered
In 1992, the FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security relatd jobs and found that. . .

Central Limit Theorem, binomial, Normal Approximation, Confidence Intervals