question archive Studies Shows That CNG Use For Sedan Car Sold In India Is Normally Distributed With A Mean Of 25
Studies Shows That CNG Use For Sedan Car Sold In India Is Normally Distributed With A Mean Of 25
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Studies Shows That CNG Use For Sedan Car Sold In India Is Normally Distributed With A Mean Of 25.5km/ Kg And A Standard Deviation Of 4.5km/G. To Get A Competitive Edge, A Manufacturer Wishes To Develop A Sedan Car That Outperforms 95% Of The Existing Sedan In Fuel Economy, What Must Be The CNG Use Rate For The New Car Be ?
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Answer:
CNG=32.925
Step-by-step explanation
Consider the z score formula
z= (x-?μ? )/SD
The corresponding z-score for 0.95 (single tailed) is 1.65. By using this value we an solve for x using the formula above.
1.65=(x-25.5)/4.5
7.425=x-25.5
x=32.925
32.925 km/kg serves as a benchmark to outdo 95 percent of the population
