A coin is tossed 5 times. Find the probability that all 5 tosses are tails. 1/5

Question

A coin is tossed 5 times. Find the probability that all 5 tosses are tails. 1/5 1/10 1/25 1/32 An apartment building has the following distribution of apartments: If an apartment is selected at random, what is the probability that it is on the 2nd floor or has 2 bedrooms? 13/17 11/17 6/11 7/11 In a second grade class containing 13 girls and 9 boys, 2 students are selected at random to give out the math papers. What is the probability that the second student chosen is a boy, given that the first one was a girl? .176 .583 .301 .429

Explanation / Answer

Result:

a).

P( Tail) =1/2

( 5 tails) = (1/2)^5 =1/32

d. 1/32

b).

P( 2nd floor or 2 bed room)= P( 2nd floor)+ P( 2 bed room)- P( 2nd floor and 2 bed room)=

=6/17+7/17-2/17 = 11/17

Answer: b. 11/17

c).

P =9/21 =0.4286

Answer: d: 0.429

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.