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GrogVix [38]
3 years ago
9

What The probability is

Mathematics
1 answer:
lianna [129]3 years ago
3 0
A) P( Jordan finishes before Jacobs)= 2/5 = 0.40
P( Jacobs finishes before Julia)   =  3/5 = 0.60
P(Jordan finishes before Jacobs AND before Julia) = 0.40 x 0.60 = 0.24

b)P( Jordan finishes before Jacobs)= 2/5 = 0.40 (already calculated


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Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean of the Population = 57.7miles/gallon

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<u><em>Step(ii):-</em></u>

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        Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }

       Z = \frac{57.4-57.7}{\frac{1.9}{\sqrt{210} } }

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<u><em>Final answer:-</em></u>

The value of test statistic

   |Z|  = 2.2883

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