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You roll a $6$ -sided die two times. $\newline$ What is the probability of rolling a number greater than $3$ and then rolling a number greater than $2$ ? $\newline$ Simplify your answer and write it as a fraction or whole number. $\newline$ _____

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Probability of independent and dependent events

Full solution

Q. You roll a

6

-sided die two times.

\newline

What is the probability of rolling a number greater than

3

and then rolling a number greater than

2

?

\newline

Simplify your answer and write it as a fraction or whole number.

\newline

_____

Determine Probability of Rolling: First, determine the probability of rolling a number greater than $3$ on a $6$ -sided die. The numbers greater than $3$ are $4$ , $5$ , and $6$ .
Calculate Probability for First Roll: There are $3$ favorable outcomes $(4, 5, 6)$ out of $6$ possible outcomes for the first roll. So, the probability for the first roll is $\frac{3}{6}$ , which simplifies to $\frac{1}{2}$ .
Determine Probability of Rolling Again: Next, determine the probability of rolling a number greater than $2$ on a $6$ -sided die. The numbers greater than $2$ are $3$ , $4$ , $5$ , and $6$ .
Calculate Probability for Second Roll: There are $4$ favorable outcomes $(3, 4, 5, 6)$ out of $6$ possible outcomes for the second roll. So, the probability for the second roll is $\frac{4}{6}$ , which simplifies to $\frac{2}{3}$ .
Find Combined Probability: To find the combined probability of both events happening in sequence (rolling a number greater than $3$ first and then a number greater than $2$ ), multiply the probabilities of the two independent events.
Find Combined Probability: To find the combined probability of both events happening in sequence (rolling a number greater than $3$ first and then a number greater than $2$ ), multiply the probabilities of the two independent events.The combined probability is $(\frac{1}{2}) \times (\frac{2}{3}) = \frac{2}{6}$ , which simplifies to $\frac{1}{3}$ .

More problems from Probability of independent and dependent events

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6

-sided die two times. What is the probability of rolling a number greater than \(3\) and then rolling a number less than \(4\)? Write your answer as a percentage.

\newline

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college students running for student government class president. The candidates include

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education majors.

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6

of the candidates are randomly chosen to give the first

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speeches, what is the probability that all of them are education majors?

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Write your answer as a decimal rounded to four decimal places.

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Question

In an experiment, the probability that event

A

\frac{2}{7}

, the probability that event

B

\frac{7}{9}

, and the probability that events

A

B

\frac{1}{9}

\newline

A

B

independent events?

\newline

\newline

\text{yes}

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\text{no}

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Question

At a science museum, visitors can compete to see who has a faster reaction time. Competitors watch a red screen, and the moment they see it turn from red to green, they push a button. The machine records their reaction times and also asks competitors to report their gender.

\newline

The probability that a competitor reacted in over

0.7

0.6

, the probability that a competitor was female is

0.4

, and the probability that a competitor reacted in over

0.7

seconds and was female is

0.3

\newline

What is the probability that a randomly chosen competitor reacted in over

0.7

seconds or was female?

\newline

Write your answer as a whole number, decimal, or simplified fraction.

\newline

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Question

A restaurant server claims that \(28\)% of the time he leaves candy with the bill, the customer tips well.

\newline

If the server's claim is true, and one day he leaves candy with \(4\) customers' bills, what is the probability that exactly \(3\) of those customers will tip well?

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Write your answer as a decimal rounded to the nearest thousandth.

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Question

There is a spinner with `50` equally likely sections, numbered from `1` to `50`. You have the opportunity to spin it. If the number is odd, you win $`11`. If the number is even, you win nothing. If you play the game, what is the expected payoff?\(\$\)_____

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Question

There are two different raffles you can enter.

\newline

In raffle A, one ticket will win a `$720` prize, and the other tickets will win nothing. There are

1,000

in the raffle, each costing `$11`.

\newline

Raffle B is for a `$370` prize. Out of

125

tickets, each costing `$5`, one ticket will win the prize, and the other tickets will win nothing.

\newline

Which raffle is a better deal?

\newline

\newline

\text{[A]Raffle A}

\newline

\text{[B]Raffle B}

Posted 8 months ago

Question

X

is a normally distributed random variable with mean

49

and standard deviation

25

\newline

What is the probability that

X

24

74

?

\newline

0.68-0.95-0.997

rule and write your answer as a decimal. Round to the nearest thousandth if necessary.

\newline

Posted 9 months ago

Question

X

is a normally distributed random variable with mean

65

and standard deviation

8

\newline

What is the probability that

X

62

68

?

\newline

Write your answer as a decimal rounded to the nearest thousandth.

\newline

Posted 9 months ago

Question

Complete the statement. Round your answer to the nearest thousandth.

\newline

In a population that is normally distributed with mean

43

and standard deviation

3

30\%

of the values are those less than ______.

Posted 9 months ago

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