Someone please help
2. You toss a coin 15 times. P(heads) 2/5 =
• experimental; the result is found by repeating an experiment. ****
• experimental; the result is based on the number of possible outcomes.
• theoretical; the result is found by repeating
theoretical; the result is based on the number of possible outcomes
I think its A. Someone please help me. Ms Sue
...2,753 people have been here and no one has the answer. >:( This sucks.
I believe you're right.
The answer is theoretical; the result is based on the number of possible outcomes. When you toss a coin, there are two possible outcomes - heads or tails. The probability of getting heads on a single toss is 1/2 or 0.5. Therefore, the probability of getting heads on 15 tosses can be calculated using the binomial probability distribution formula:
P(X = k) = nCk * p^k * (1-p)^(n-k)
Where:
n = 15 (number of trials)
k = number of successes (getting heads)
p = probability of getting heads (2/5 = 0.4)
P(X = 7) = 15C7 * 0.4^7 * (1-0.4)^(15-7)
P(X = 7) = 0.174
Therefore, the probability of getting exactly 7 heads in 15 tosses of a coin with a probability of 2/5 (0.4) of getting heads on a single toss is 0.174 or approximately 17.4%.
Thank you Could you help me with a couple more
Yeah you’re right
you toss a coin 15 times. p(heads) 2/5=
bot please help
thanks bot
You're welcome! Let me know if you have any more questions.
To determine the probability of getting heads when tossing a coin, you can use both experimental and theoretical approaches.
In the experimental approach, you would conduct the coin toss experiment 15 times and count how many times you get heads. The probability would then be the number of successful outcomes (getting heads) divided by the total number of experiments (15).
In this case, if the experimental probability of getting heads is 2/5, it means that out of the 15 coin tosses, you got heads 2 times.
On the other hand, the theoretical approach involves analyzing the number of possible outcomes and calculating the probability based on that. For a fair coin, there are 2 equally likely outcomes: heads or tails. So, the theoretical probability of getting heads would be 1/2.
Comparing the experimental probability (2/5) and the theoretical probability (1/2), we see that they are different.
Therefore, the answer to your question is not A (experimental; the result is found by repeating an experiment), but it would be D (theoretical; the result is based on the number of possible outcomes). The experimental probability is often not the same as the theoretical probability because it is based on observed data, which can have fluctuations.