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andreev551 [17]
2 years ago
12

According to a recent survey, 50% of people aged 13 and older in the United States are addicted to texting. To simulate choosing

a random sample of 20 people in this population and seeing how many of them are addicted to texting, use a deck of cards. Shuffle the deck well, and then draw one card at a time. A red card means that person is addicted to texting; a black card means he isn’t. Continue until you have drawn 20 cards (without replacement) for the sample.
Mathematics
1 answer:
NeX [460]2 years ago
3 0

Answer:

It is not valid 49.02% instead of 50%

Step-by-step explanation:

If you don't replace the cards,the probability of obtaining a person that is addicted to email is no longer 50% after the first drawn card.

If you drawn a red card there are 25 red cards and 26 black cards then the probability of 25/25+26=25/51 ≅0.4902 = 49.02 instead of 50%

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Answer:  y + 1 = 2 (x -1)

Step-by-step explanation:

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5 0
3 years ago
If salt (5.99 × 10–6 mol) is dissolved in 1.50 × 10–2 l of water, which expression can be used to find the molarity of the resul
kolezko [41]

The molarity of the resulting solution is 3.99 × 10⁻⁴ M. The correct option is the third option 3.99 × 10⁻⁴ M

<h3>Molarity of a solution</h3>

From the question, we are to determine the molarity of the resulting solution

From the given information,

Number of moles = 5.99 × 10⁻⁶ mol

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Hence, the molarity of the resulting solution is 3.99 × 10⁻⁴ M. The correct option is the third option 3.99 × 10⁻⁴ M

Learn more on Calculating molarity here: brainly.com/question/23051191

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Help picture below problem 6
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Step-by-step explanation:

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