Margo places 6 pennies and 4 nickels in a jar. For the experiment, she selects a penny, replaces it, and selects another penny. If Margo repeats the experiment 100 times, how many times can she expect to select two pennies?

[tex]\dfrac{\text{Number if ways to get 2 pennies}}{\text{Total ways to select 2 coins}}\\\\=\dfrac{6\times6}{10\times10} \ \ [\text{independent events]}\\\\=\dfrac{36}{100}[/tex]

If Margo repeats the experiment 100 times, then expected number of times to select two pennies = [tex]\dfrac{36}{100}\times100=36[/tex]

She is expected to select 2 pennies 36 times.

facundo3141592 facundo3141592 · Answer 2 · 2022-01-25T12:29:48+01:00

We will see that Margo can expect to randomly select two pennies 36 times.

Probability of selecting two pennies at random.

The probability of selecting a penny at random is equal to the quotient between the number of pennies in the jar and the total number of coins in the jar, this is:

p = 6/10

And doing that two times, needs that probability two times, so the probability of selecting two pennies is:

p = (6/10)*(6/10) = 36/100

How many times she can expect to select 2 pennies in 100 attempts?

Here we just need to multiply the above probability by 100, we will get:

(36/100)*100 = 36

So she can expect to get two pennies 36 times.

If you want to learn more about probability, you can read:

https://brainly.com/question/251701

Margo places 6 pennies and 4 nickels in a jar. For the experiment, she selects a penny, replaces it, and selects another penny. If Margo repeats the experiment 100 times, how many times can she expect to select two pennies?​

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Probability of selecting two pennies at random.

How many times she can expect to select 2 pennies in 100 attempts?

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Margo places 6 pennies and 4 nickels in a jar. For the experiment, she selects a penny, replaces it, and selects another penny. If Margo repeats the experiment 100 times, how many times can she expect to select two pennies?