Afair coin is flipped multiple times until it lands on heads. if the probability of landing on heads is 50%. what is the probability of first landing on heads on the third attempt?

1/8

Step-by-step explanation:

Given that A fair coin is flipped multiple times until it lands on heads.

The coin is unbiased.

We have to find the probability of first landing on heads on the third attempt.

We know that in a unbiased coin, each toss is independent of the other and also P(H) = P(T) = 0.5 in each attempt.

REquired probability = Probability of first landing on heads on the third attempt

= Prob of (I two trials result in tail and third result in head)

=P(I tail) P(II tail) P(III head) (since each trial is independent)

=

12.5 feet

step-by-step explanation:

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt