FULL SCREENPRINTER VERSION BACK NEXT Chapter 06, Section 6.3, Problem 026a Tommy

Question

FULL SCREENPRINTER VERSION BACK NEXT Chapter 06, Section 6.3, Problem 026a Tommy Wait, a minor league baseball pitcher, is notorious for taking an excessive amount of time between pitches. In fact, his times between pitches are normally distributed with a mean of 33 seconds and a standard devlation of 2.8 seconds. What percentage of his times between pitches are longer than 35 seconds? Round your answer to two decimal places The time between pitches is longer than 35 seconds % of the time the tolerance is +/-2% Question Attempts: 0 of 2 used SAVE FOR LATER SUBMIT ANSWER powered by MapleNet

Explanation / Answer

Mean is 33 and s is 2.8. z can be calculated as (x-mean)/s

We need P(x>35) =P(z>(35-33)/2.8)=P(z>0.71) or 1-P(z<0.71)

from normal distribution table we get 1-0.7611 =

0.2389

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