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What is the PH H H T on four flips of a coin?

Updated: 9/24/2023
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NicoleAshleytw6264

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9y ago

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Assuming the coin is fair, the probability of that sequence is 1/16.

The probability of three H and one T, in any order, is 1/4.

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9y ago
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Q: What is the PH H H T on four flips of a coin?
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What is the probability of getting at least 2 heads in three flips of a fair coin?

In three flips of a fair coin, there are a total of 8 possible outcomes: T, T, T; T, T, H; T, H, T; T, H, H; H, H, H; H, H, T; H, T, H; H, T, T Of the possible outcomes, four of them (half) contain at least two heads, as can be seen by inspection. Note: In flipping a coin, there are two possible outcomes at each flipping event. The number of possible outcomes expands as a function of the number of times the coin is flipped. One flip, two possible outcomes. Two flips, four possible outcomes. Three flips, eight possible outcomes. Four flips, sixteen possible outcomes. It appears that the number of possible outcomes is a power of the number of possible outcomes, which is two. 21 = 2, 22 = 4, 23 = 8, 24 = 16, .... Looks like a pattern developing there. Welcome to this variant of permutations.


What is the probability that three coin flips will have at least one head?

Pr(3 flips at least one H) = 1 - Pr(3 flips, NO heads) = 1 - Pr(3 flips, TTT) = 1 - (1/2)3 = 1 - 1/8 = 7/8


A fair coin is continually flipped What is the probability that the first four flips are a. H-H-H-H b. T-H-H-H c. what is the probability that the pattern T-H-H-H occurs before the pattern.?

a) 1/16b) 1/16c) 1/256 [this answer was given, but it is unclear what part-c is even asking: The pattern occurs before what pattern? There are many variables which are unspecified and would affect the outcome.]


Which tree diagram shows all the possible outcomes for 2 coin flips?

The tree in which the first set of branches are H and T and then, from each of those nodes, there is a pair of branches which are H and T.


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What is the probability of flipping a coin a tail on the first and a head on the second or a head on the first and a tail on the second?

Two flips can have four possible results:T - TT - HH - TH - HThe question defines 'success' as either H-T or T-H.Two successes out of four possibilities = probability of 2/4 = 1/2 = 50% .


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p = -log H= concentration of hydrogen in solution (H+) therefore, pH= -log [H+] or [H+] = 10-pH


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becoz pH is the negative log of H ions. pH=-log(H+)


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