A company wants to estimate the time its trucks take to drive from city A to city B. Assume that the standard deviation is known to equal 12 minutes. What is the sample size required in order that the probability of making an error of more than 2 minutes will not exceed 5 percent?
A) 12 observations
B) 139 observations
C) 36 observations
D) 129 observations
RES / 341 RES/341 RES341 RES 341 QUIZ # 3
(Chapters 2+8 from Applied Statistics in Business and Economics )
To View all the Questions covered : 4 sets of RES341 Final
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