## anonymous one year ago A football quarterback has 2 more chances to throw a touchdown before his team is forced to punt the ball. He misses the receiver on the first throw 30% of the time. When his first throw is incomplete, he misses the receiver on the second throw 10% of the time. What is the probability of not throwing the ball to a receiver on either throw?

1. anonymous

2. anonymous

@hba

3. anonymous

@Elsa213

4. anonymous

@JoannaBlackwelder

5. anonymous

@deepika.comet

6. anonymous

@kiamousekia

7. anonymous

idk sorry

8. anonymous

@GabbyLovesYou

9. deepika.comet

Hello.. @kylezz Welcome to Openstudy..!! Im poor in maths but willl tag few of my frnds who can help u out.. @Nnesha @shreehari499 @ganeshie8 They will surely help u out..!!

10. anonymous

thank you @deepika.comet

11. deepika.comet

you're most welcome.. Happy studying at Openstudy... :)

12. anonymous

@nevermind_justschool

13. deepika.comet

hey @TavTav one of my frnd.. is here to help you out.. im tagging him.. hope you clarify all your doubts being online.. @Frostbite thnx for the help...in advance

14. anonymous

@deepika.comet thanks again

15. anonymous

@Frostbite do you understand it?

16. Frostbite

@TavTav Yeah I understand it, but lets see if I can make you understand: But first we got to talk about two concepts: dependent and independent events. Something you are familiar with?

17. anonymous

yess

18. Frostbite

Okay, these events, are they dependent or independent?

19. anonymous

independent

20. Frostbite

I would say the same, in that case we may use the rule of multiplication of independent probabilities: When two events, A and B, are independent, the probability of both occurring is $\Large P(A|B)=P(A) \times P(B)$

21. anonymous

so multiply .3*.1 ??? and that will be my answer

22. Frostbite

I would think so yes, if they are indeed independent events. a little unsure

23. anonymous

thank you , can you help me with another one?

24. Frostbite

Yea sure. Gotta be going soon though.

25. anonymous

Josh believes the Spanish club students at his school have an unfair advantage in being assigned to the Spanish class they request. He asked 500 students at his school the following questions: "Are you in the Spanish club?" and "Did you get the Spanish class you requested?" The results are shown in the table below: Spanish Club Not in Spanish Club Total Received Spanish class requested 265 100 365 Did not get Spanish class requested 70 65 135 Total 335 165 500 Help Josh determine if all students at his school have an equal opportunity to get the Spanish class they requested. Show your work and explain your process for determining the fairness of the class assignment process.

26. anonymous

@Frostbite can you help

27. Frostbite

Heard about hypothesis testing and its relation to probability?

28. anonymous

i dont think so

29. anonymous

@Frostbite

30. Frostbite

Then I don't know how you want to evaluate it really. And nor do I got the time right now. Sorry.