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Korolek [52]
4 years ago
11

Alice can return to normal size if she flips at least 1 tail out of two flips of the coin. determine the probability as a percen

tage of her returning to normal size.
P(at least 1 tail)=___%
Mathematics
1 answer:
kolbaska11 [484]4 years ago
7 0

Answer:

75

Step-by-step explanation:

1 - P(no tails)

1 - (½)²

1 - ¼

¾ × 100 = 75%

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\left|\begin{array}{c|c|c|c|c||c}$Country Visited&$UK& $France& $Spain& $Italy &$Total\\&&&&&\\$Number of Customers &968& 248& 2042& 742& 4000\\&&&&&\\$Number of sample&121&31&255&93&500\end{array}\right|

Step-by-step explanation:

\left|\begin{array}{c|c|c|c|c||c}$Country Visited&$UK& $France& $Spain& $Italy &$Total\\$Number of Customers &968& 248& 2042& 742& 4000\\$Number of sample&&&&&&\end{array}\right|

Since the company wants to survey 500 customers by the countries visited, the number of samples from each country will be proportional to the number of customers.

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For France, Number of Samples=\dfrac{248}{4000}X500=31

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For Italy, Number of Samples=\dfrac{742}{4000}X500\approx 93

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