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3 years ago

8

Lucy was playing a card with two friends. They were playing with a deck of 21 cards. Lucy dealt 1/3 of the deck to each person.

How many cards did lucy get?
(for my nine year old sister)

2 answers:

Rama09 [41]3 years ago

8 0

If each of them got 1/3 of the deck then they would each get 7 cards

Irina-Kira [14]3 years ago

7 0

You dived 21 cards by 3 and your answer is lucy got 7 cards

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Step-by-step explanation:

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$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{340119}{10} = 34011.9$

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$t_{critical}\text{ at degree of freedom 9 and}~\alpha_{0.05} = \pm 2.2621$

$34011.9 \pm 2.2621(\frac{17357.09}{\sqrt{10}} ) = 34011.9 \pm 12416.20 = (21595.7,46428.1) \approx (21596,46428)$

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