stickmasterman745
Answered

At Westonci.ca, we provide reliable answers to your questions from a community of experts. Start exploring today! Connect with a community of experts ready to provide precise solutions to your questions on our user-friendly Q&A platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

PLEASE HELP
You can explain or not

There are 2 blue blocks in a bag of 9 blocks. You pick 4 without replacement. What is the probability that you get at least 1 blue block?

Sagot :

macintoshical101

Answer:

[tex]\frac{13}{18}[/tex] (72.22%)

Step-by-step explanation:

For this question, you must get at least one blue block. However, you can also think of it this way: pretend the other seven blocks are red (it does not matter since the colors other than blue do not matter) what is the probability that you do not only get red blocks?

You can calculate the probability that you only get red blocks simply with multiplication rule:

[tex]\frac{7}{9} *\frac{6}{8} *\frac{5}{7} *\frac{4}{6}[/tex][tex]=\frac{5}{18}[/tex]

(not the numbers increment down because they are not replaced)

Then, you use the fact that having red blocks and not having red blocks as a complement to calculate the probability

[tex]1-\frac{5}{18}[/tex][tex]=\frac{13}{18}[/tex]

This is your final answer: 72.22%

Thanks for using our platform. We're always here to provide accurate and up-to-date answers to all your queries. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Thank you for visiting Westonci.ca, your go-to source for reliable answers. Come back soon for more expert insights.