0
Kalvin tosses a coin five days in a row and gets tails every time Do you think there is something wrong with the coin How can you find out?
KelsiG
There is a 1/16 probability that 5 tosses end with the same result - 1/32 that they are all tails. In this kind of example, most statisticians would not reject the hypothesis of a fair coin unless the probability was less than 5% or 1/20.
The null hypothesis is that the coin is a fair coin. If the alternative hypothesis is that something is wrong with the coin, the probability of a result such as the one observed (and its mirror image) is 6.25%. So you would not reject the null hypothesis at the 5% level.
However, if your alternative is that the coin favours tails, the probability of as extreme an outcome is 0.03125 or 3.125% and you would reject the null hypothesis.
This is a marginal case at the 5% level and you may wish to toss the coin a few more times to reduce the probability of the outcome occurring purely by chance.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
The experimental probability of a coin landing on heads is 712. if the coin landed on tails 30 timefind the number of tosses?
The experimental probability of a coin landing on heads is 7/ 12. if the coin landed on tails 30 timefind the number of tosses?
You toss a coin 9 times and every time it turns up heads what is the chance of it turning up tails the tenth time?
If it is a fair coin then 50/50 or 1 chance in 2. The coin has no memory of the tosses that went before.
If you throw a coin 6 times how many possible outcomes are there?
Whenever you are trying to figure out the answer to an outcome problem, you just multiply how many sides it has by how many times you are tossing the coin.... 2 x 6 = 12 times.===================================Very reasonable. Warm, fuzzy, and intuitively satisfying. But, sadly, wrong.Every toss of a coin has 2 possible outcomes.If you write down the results of 6 tosses like: H T T H T H with an 'H' for each headsand a 'T' for each tails, the number of different patterns you could write down forsix tosses is2 x 2 x 2 x 2 x 2 x 2 = 64 .If you don't care about the sequence, and you just want to know how manydifferent splits of 'heads' vs 'tails' you could get in 6 tosses, then there are sevendifferent possible outcomes:-- no heads, 6 tails-- 1 heads, 5 tails-- 2 heads, 4 tails-- 3 heads, 3 tails-- 4 heads, 2 tails-- 5 heads, 1 tails-- 6 heads, no tails
How many possible outcomes of tossing a coin 3 times have exactly 1 head?
The outcomes are: heads, tails, tails or tails, heads, tails or tails, tails, heads. You can see that there are 3 possible outcomes with exactly 1 head.
How many possible outcomes when tossing 3 coins?
three heads two head, one tails one heads, two tails three tails
What is the probability of getting both tails on two tosses of a coin?
The probability of two tails on two tosses of a coin is 0.52, or 0.25.
Sarah tosses 25 coins 3 out of every 5 are heads up and the rest are tails upHow many coins are tails up?
10 coins would be tails up.
What are the possible outcomes for 2 tosses of a coin?
Heads+Heads ; Heads+Tails ; Tails+Tails
What is the probability of getting zero tails on a two tosses?
0.5
How many possible outcomes are there for each two tosses?
heads and tails
What is the probability of getting no tails on two tosses of a coin?
The probability is 1/4
What is the probability of getting at least 2 tails in 4 tosses of a fair coin?
The probablility of getting 2 tails in 4 tosses of a fair coin is most likely 50%, 2/4=1/2, or .50.
What is the probability of getting 4 tails in 4 tosses of an unfair coin where probability of tails is 7?
The answer would be 7x7x7x7. 2401 to 1.
The experimental probability of a coin landing on heads is 712. if the coin landed on tails 30 timefind the number of tosses?
The experimental probability of a coin landing on heads is 7/ 12. if the coin landed on tails 30 timefind the number of tosses?
A coin is tossed 5 times find the probability that the 6th toss is a tail given tht the first 5 tosses were all tails?
The chance is 50%-50% that it will be heads or tails; this does not change regardless of the number of previous tosses and their results.
What is the meaning of the term heads and tails for the example when one tosses a coin to make a choice?
It means just what it seems to -- someone tosses a coin up and you try to guess which side will be facing up when it lands. "Heads" is the side with the person's face on it and "tails" is other side.
What is the probability of one head and two tails?
In three tosses, the probability is 3/8.
