What is the measure. Of angle CED
1 answer:
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Answer:
<em>The approximate percentage of cars that remain in service between 73 and 84 months</em>
<em>P( 73 < x < 84 ) = 0.02145 = 2.1 %</em>
<u>Step-by-step explanation</u>:
<u><em>Explanation</em></u>:-
Given mean of the Population 'μ ' = 51 months
Standard deviation of the Population 'σ' = 11 months
Let 'X' be the random variable of Normal distribution
<em>Let 'X' = 73</em>
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<em>Let 'X' = 84</em>
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<em>The approximate percentage of cars that remain in service between 73 and 84 months</em>
<em>P( 73 < x < 84 ) = P( 2 < Z < 3)</em>
<em> = P( Z<3) - P( Z <2)</em>
<em> = 0.5 + A(3) - ( 0.5 + A(2))</em>
<em> = A(3) - A( 2)</em>
<em> = 0.49865 - 0.4772 ( From Normal table)</em>
<em> = 0.02145</em>
<em> P( 73 < x < 84 ) = 0.02145</em>
<em>The approximate percentage of cars that remain in service between 73 and 84 months</em>
<em>P( 73 < x < 84 ) = 0.02145 = 2.1 %</em>
Answer:
b.
Step-by-step explanation:
The scale factor is the number by which one must multiply all sides in a triangle such that its sides are the same as another triangle. This only works in similar triangles (triangles where all of the angles between them are congruent or have the same measures).