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Which of these contexts describes a situation that is an equal chance or 50-50?
Rolling a number between 1 and 6 (including 1 and 6) on a standard six-sided die, numbered from 1 to 6 .
Spinning a spinner divided into four equal-sized sections colored red/green/yellow/blue and landing on red or green.
Winning a raffle that sold a total of 100 tickets if you bought 90 tickets.
Reaching into a bag full of 10 strawberry chews and 10 cherry chews without looking and pulling out a strawberry or a cherry chew.

Which of these contexts describes a situation that is an equal chance or $50$ $-50$ ? $\newline$ Rolling a number between $1$ and $6$ (including $1$ and $6$ ) on a standard six-sided die, numbered from $1$ to $6$ . $\newline$ Spinning a spinner divided into four equal-sized sections colored red/green/yellow/blue and landing on red or green. $\newline$ Winning a raffle that sold a total of $100$ tickets if you bought $90$ tickets. $\newline$ Reaching into a bag full of $10$ strawberry chews and $10$ cherry chews without looking and pulling out a strawberry or a cherry chew.

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Identify independent events

Full solution

Q. Which of these contexts describes a situation that is an equal chance or

50

-50

?

\newline

Rolling a number between

1

and

6

(including

1

and

6

) on a standard six-sided die, numbered from

1

to

6

.

\newline

Spinning a spinner divided into four equal-sized sections colored red/green/yellow/blue and landing on red or green.

\newline

Winning a raffle that sold a total of

100

tickets if you bought

90

tickets.

\newline

Reaching into a bag full of

10

strawberry chews and

10

cherry chews without looking and pulling out a strawberry or a cherry chew.

Standard Die Probability: In the first context, rolling a number between $1$ and $6$ on a standard six-sided die, each number has an equal chance of $\frac{1}{6}$ , not $50$ - $50$ .
Spinner Probability: In the second context, spinning a spinner divided into four equal-sized sections and landing on red or green gives us two favorable outcomes out of four possible outcomes. This is a $50$ $-50$ chance since the probability of landing on red or green is $\frac{2}{4}$ , which simplifies to $\frac{1}{2}$ .
Raffle Probability: In the third context, winning a raffle with $90$ out of $100$ tickets gives a probability of $\frac{90}{100}$ , which is not equal to $50-50$ but rather $90\%$ .
Bag Probability: In the fourth context, reaching into a bag with an equal number of strawberry and cherry chews ( $10$ each) gives us a total of $20$ chews. Pulling out either a strawberry or a cherry chew is certain since there are only those two types. Therefore, this does not represent a $50$ - $50$ chance but a certainty of $100\%$ .

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