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lianna [129]
3 years ago
9

I buy 6 CDs costing £6.99. How much change do I get from £50?

Mathematics
2 answers:
SCORPION-xisa [38]3 years ago
8 0

Answer:

8.06

Step-by-step explanation:

Take the cost of a cd and multiply by 6

6.99 *6

41.94

Subtract this from 50.00

50.00 - 41.94

8.06

You will get 8.06 back

gizmo_the_mogwai [7]3 years ago
4 0

Answer:

subtract the 6.99 from 50 and you get your answer

Step-by-step explanation:

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Suppose that .06 of each of two populations possess a given characteristic. Samples of size 400 are randomly drawn from each pop
omeli [17]

Answer:

The correct answer to the following question will be "0.0367".

Step-by-step explanation:

The given values are:

p1=p2=0.06

q1=q2=1-p1=0.94

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As we know,

E(p1-p2)=p1-p2=0\\

SE(p1-p2)=\sqrt{\frac{p1q1}{n1}+\frac{p2q2}{n2}}

On putting the given values in the above expression, we get

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Now, consider

P(p1-p2>0.03)=P[\frac{(p1-p2)-E(p1-p2)}{SE(p1-p2)}>\frac{0.03-0}{0.0168}]

                            =P(Z>1.7857)

                            =P(Z>1-79)

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Therefore, "0.0367" is the right answer.

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3 years ago
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