40) A study of the amount of time it takes a mechanic to rebuild the transmission...

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J10 pZ750) Notob.le ) 0.0062

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A study of the amount of time it takes a mechanic to rebuild the transmission for...

A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. If 40 mechanics are randomly selected, find the probability that their mean rebuild time exceeds 8.1 hours
A study of the amount of time it takes a mechanic to rebuild the transmission for...

A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. If 40 mechanics are randomly selected, find the probability that their mean rebuild time exceeds 8.1 hours.
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A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. If 40 mechanics are randomly selected, find the probability that their mean rebuild time exceeds 9.1 hours. A. 0.1046 B. 0.0069 C. 0.0046 D. 0.1285

A study of the amount of time it takes a mechanic to rebuild the transmission for...

A study of the amount of time it takes a mechanic to rebuild the transmission for a 2010 Chevrolet Colorado shows that the meanis 8.4 hours and the standard deviation is 1.8 hours. I 40 mechanics are randomly selected, find the probability that their mean rebuild time is less than 0.9 hours. Hints Use Central limit theorem because sample size is 40). O 0.9600 04276 O 0.9756 O 0.9509
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A study of the amount of time it takes a mechanic to rebuild the transmission for...

A study of the amount of time it takes a mechanic to rebuild the transmission for a 2010 Chevrolet Colorado shows that the mean is a 4 hours and the standard deviation is 18 hours. It 40 mechanics are randomly selected, find the probability that therm rebuild time is less than 8.9 hours. Round to four decimal places. O A. 0.9756 OB. 0.4276 OC. 0.9589 OD. 0 9605 Click to select your answer 11/10/2016 HP 2216

Question 2 0/1 pts Solve the problem. A study of the amount of time it takes...

Question 2 0/1 pts Solve the problem. A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. If 40 mechanics are randomly selected, find the probability that their mean rebuild time is less than 8.9 hours. 0.4276 0.9756 0.9608 • 0.9589
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A study of the amount of time it takes a mechanic to rebuild the transmission for a certain car shows that the mean is 8.4 hours and the standard deviation is 1.8hours. If 40 mechanics are randomly selected, find the probability that their mean rebuild time exceeds 7.7 hours.
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Problem 3 Kenny, a mechanic, just changed jobs. The new car dealership charges a set number of hours for him to rebuild transmissions. A study from Ford Motor Company found the amount of time it takes a mechanic to rebuild a transmission is Normal with a mean of 8 and a standard deviation of 1.7 hours. Draw a well labeled sketch of this distribution. Include the Empirical Rule cut offs. See Stevens ThinkDO p 21. What time is at the...

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