View Answered Questions
No. & Date Asked  Question 

# 209 :: 5/29/08

In 1992, the FAA conducted 86,991 preemployment 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 
# 269 :: 7/9/08

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. . .
ZScore,
Binomial Probability,
Normal Approximation,
binomial,
BINOMDIST 
# 319 :: 8/6/08

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 
# 350 :: 8/16/08

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,
1Sample Proportion Test 
# 368 :: 9/5/08

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,
2proportion test,
Binomial Probability 
# 388 :: 9/17/08

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. . .
2proportion test,
Binomial Probability,
Normal Approximation 
# 399 :: 9/20/08

When you calculate CIs for time on task, I notice that you use the critical value from the tdistribution (TINV(0.05, degrees_of_freedom)). But when y. . .
exact interval,
Binomial Probability,
TINV,
Adjusted Wald,
Wald Interval,
Normal Approximation,
Small Sample 
# 467 :: 10/7/08

The Webbased 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. . .
1Proportion Test,
Normal Approximation 
# 501 :: 11/7/08

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 