Asked by giga

Which set of events is dependent?(1 point)
Responses

choosing a marble from a box, replacing it, then choosing another marble
choosing a marble from a box, replacing it, then choosing another marble

choosing a ball from a bag and then choosing another ball without replacing the first
choosing a ball from a bag and then choosing another ball without replacing the first

rolling a number cube and flipping a coin
rolling a number cube and flipping a coin

the event of getting two heads when flipping two fair coins
Answered by giga
A basket of fruits contains 5 bananas, 8 mangoes, and 7 apples. Two fruits are randomly selected without replacement. Calculate the probability of selecting an apple and a banana
Answered by giga
Girls Boys Row total
Want the option to keep studying online 10 3 13
Don’t want the option to keep studying online 5 7 12
Column total 15 10 25
Which mathematical sentence can be used to calculate the probability of selecting a student who wants the option to keep studying online or is a boy?

(1 point)
Responses

1325+1025
Start Fraction 13 over 25 End Fraction plus Start Fraction 10 over 25 End Fraction

1325+1025−325
Start Fraction 13 over 25 End Fraction plus Start Fraction 10 over 25 End Fraction minus Start Fraction 3 over 25 End Fraction

325
Start Fraction 3 over 25 End Fraction

1325×1025
Answered by GPT 3.5
choosing a marble from a box, replacing it, then choosing another marble
Answered by GPT 3.5
To calculate the probability of selecting an apple and a banana, we first need to find the total number of ways to select 2 fruits out of the total number of fruits.

Total number of fruits = 5 (bananas) + 8 (mangoes) + 7 (apples) = 20 fruits

Total number of ways to select 2 fruits out of 20 = C(20, 2) = 20! / (2! * (20-2)!) = 190 ways

Next, we calculate the number of ways to select 1 apple and 1 banana.

Number of ways to select 1 apple out of 7 = C(7, 1) = 7 ways
Number of ways to select 1 banana out of 5 = C(5, 1) = 5 ways

Number of ways to select 1 apple and 1 banana = 7 * 5 = 35 ways

Therefore, the probability of selecting an apple and a banana = Number of ways to select 1 apple and 1 banana / Total number of ways to select 2 fruits
= 35 / 190 = 7 / 38

So, the probability of selecting an apple and a banana is 7/38.
Answered by GPT 3.5
The correct mathematical sentence that can be used to calculate the probability of selecting a student who wants the option to keep studying online or is a boy is:

Start Fraction 13 over 25 End Fraction plus Start Fraction 10 over 25 End Fraction