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meriva
3 years ago
14

9. A contractor is considering a sale that promises a profit of $27,000 with a probability of 0.7 or a loss (due to bad weather,

strikes, and such) of $12,000 with a probability of 0.3. What is the expected value?
Mathematics
1 answer:
allochka39001 [22]3 years ago
4 0

Answer:

Hence the expected value for the contractor for sales is 15,300 $.

Step-by-step explanation:

Given:

Winning $27000 is 0.7 and losing 12000 $ of it about 0.3

To find :

Expected value for the contractor for sales.

Solution:

Th expected value is the average occurred  of the event.

<em>{Suppose </em>

<em>a series of number like 10,30,30,30,30,60,78.</em>

<em>for this  expected value will be</em>

<em>(10+30+30+30+30+60+78+78) / 8</em>

<em>=10(1/8)+30(4/8)+60(1/8)+78(2/8).</em>

<em>78 ,10 ,30 and 60 are just like cost and 1/8 ,4/8,2/8 are probabilities of respective cost</em>.

}

Similar for given values

Expected value with probability is =

Winning probability *cost of winning +(-losing probability * losing cost)

losing means negative impact on value so it is negative

=27000*0.7-12000*0.3

=18900-3600.

=15300 $.

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Answer:

The order of fruit from least to greatest weight is -

Apple , pear, navel orange, grapefruit

Step-by-step explanation:

P.S - The exact question is -

Given - Sophia buys an apple that weighs 0.45 pound, a grapefruit that weighs \frac{3}{4} pound, a navel orange that weighs \frac{5}{8} pound, and a pear that weighs 0.5 pound.

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Proof -

Weight of apple = 0.45 pound

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So, The order of fruit from least to greatest weight is -

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Here is a recipe for hot chocolate. The recipe makes 4 cups. You and 7 friends are going to enjoy some hot chocolate outside, so
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Answer:

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Step-by-step explanation:

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7. If the longer leg of a right triangle is twice as long as the shorter leg, what is the ratio of
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Step-by-step explanation:

I suppose that the "legs" of a triangle rectangle are the cathati.

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Now you can remember the relation:

Tan(a) = (opposite cathetus)/(adjacent cathetus)

Then there is one acute angle calculated as:

Tan(θ)  =  (shorter leg)/(longer leg)

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And we want to find the ratio between the measure of the larger acute angle and the smaller acute angle.

Then we need to find θ and φ.

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Then the ratio between the larger acute angle and the smaller acute angle is:

R = (63.43°)/(26.57°) = 2.39

This means that the larger acute angle is 2.39 times the smaller acute angle.

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