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Artist 52 [7]
4 years ago
10

There is one error in one of five blocks of a program. To find the error, we test three randomly selected blocks. Let X be the n

umber of errors in these three blocks. Compute E(X) and Var(X).
Mathematics
1 answer:
Molodets [167]4 years ago
7 0
<span>The probability, or expectation value for X in a block, equals the number of occurrences of X in all the blocks divided by the total number of blocks

</span>

well E(X)=µ and 

Var(X)=E[(X-µ)^2]

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Find two possible factors for the estimated product 1600
TEA [102]
Two factors that give a product of 1600 can be 80 × 20
4 0
4 years ago
Marque' was babysitting for a friends' parentss Saturday morning and was paid $25 per hour for 5 hours. Later that evening, he w
harkovskaia [24]
Multiply the hours worked by the wage,
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Add the two totals,
140+125=265,
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5 0
3 years ago
What is the following quotient
Likurg_2 [28]

Answer:

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7 0
3 years ago
Apply the distributive property to factor out the gcf of 35+14
aalyn [17]

Answer:

  7(5 +2)

Step-by-step explanation:

From our knowledge of times tables, we know that ...

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4 0
3 years ago
Sarah is selling bracelets and necklaces to make money for her summer vacation. The bracelets cost $2 and the necklaces cost $3.
marusya05 [52]

Answer:

85 Necklaces and ----- Bracelets.

Step-by-step explanation:

500 Divided by 2 = 250, The 500 is the amount in total,The 250 is the amount of bracelets and necklaces needed for 500$ To be a accurate number for 'Sarah's ' Situation. Now 250 divided by 2 is 125. It was divided by 2 so it can be the amount the bracelets cost. Or instead of dividing to get 250, You can multiply and do  2x125=250, So them add Go on from there, Its not to hard but if you need more help I'm here!

Now for the necklace portion of it. 3x80=240, So she sold 80 necklaces. Than sold 3 more. Now you have a total of 250.

5 0
3 years ago
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