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olya-2409 [2.1K]
3 years ago
10

A credit card company has found that 0.1% of all transactions are fraudulent. It has developed a computer program that correctly

identifies whether a transaction is fraudulent or not 99% of the time. If the program scans 5,000,000 transactions, about how many of them will it identify as fraudulent?
Mathematics
2 answers:
Serjik [45]3 years ago
7 0
Given:
0.1% of all transactions are fraudulent
99% correct identification whether a transaction is fraudulent or not.
Scanned 5,000,000 transactions.

5,000,000 x 0.1% = 5,000 fraudulent transactions.

For me, there are 5,000 fraudulent transactions. This is based on the 0.1% rather than the 99%. Because the problem clearly states that the 0.1% of ALL transaction is identified as fraudulent. The 99% of the computer program only deals with the correct identification of the transaction as either fraudulent or not. For me, it is not a clear measure of the true number of fraudulent transactions.
agasfer [191]3 years ago
3 0

Answer: 4,950


Step-by-step explanation:

you just do .99 x 5,000 and you get 4,950


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Answer:

Yes lines are intersecting, point of intersection is <4,2,0>.

Step-by-step explanation:

Given parametric equations of line are:

r_{1}(t) =  + t  \\ r_{1}(t) = \\ r_{1}(t) = ---(1)

r_{2}(s) =  + s \\ r_{2}(s) = \\ r_{2}(s) = ---(2)\\

If lines are intersecting then parametric coordinates of (1) are equal to (2)

3+t=4s---(A)\\2t=1+s---(B)\\2-2t=s-1---(C)\\

Considering A and B to find values of t and s

From A

t=4s-3---(D)

Putting in (B)

2(4s-3)=1+s

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If lines are intersecting then these values of s and t must satisfy (C)

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This shows lines are intersecting.

At this value of t, (1) becomes

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r_{2}(1)=4, 1+1,-1+1>\\=

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3 years ago
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