Please help you have to write each expression in two other ways

Mathematics

1 answer:

galina1969 [7]3 years ago

3 0

11. a) .19 b) 19/100
12. a) 23% b) .23
13. a) 7% b) 7/100
14. a) .11 b) 11/100
15. a) .2 b) 2/100
16. a) .9 b) 9%
17. a) 13% b) 13/100
18. a) ¼ b) .25

Hoped it helped. ☺

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The manager of a supermarket wants to obtain information about the proportion of customers who dislike a new policy on cashing c

alex41 [277]

Answer:

n = 61 costumers

Step-by-step explanation:

For calculating the number of costumers he should sample we use the next equation:

$n = \frac{z_{1-\alpha/2}^{2}p(1-p)}{E^{2} }$

Where E is the error that we are prepared to accept, in this case E = 0.15

How we don't know the value of p, we can estimate it like p = 0.5

∝ = 1-0.98 = 0.02

1-∝/2 = 0.99

$z_{0.99} = 2.33$

$n = \frac{(2.33^{2})(0.5)(1-0.5)}{0.15^{2} }$

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3 years ago

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Tanya [424]

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Step-by-step explanation:

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alex41 [277]

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Klio2033 [76]

Your answers are:
1: 14
2: 66
3: 4
4: 1/16 or 0.0625
5: 17
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