Question

You toss a coin 10 times. Give all answers as decimals, to four decimal places. If...

You toss a coin 10 times.

Give all answers as decimals, to four decimal places. If the answer is exact, give an exact value, for example, if the answer is exactly 6, enter 6.

        1. What is the expected number (E[x]) of heads?  

        2. What is the standard deviation of the number of heads?  

       3. What is the probability of getting exactly 6 heads?      

       4. What is the probability of getting between 2 and 5 heads, inclusive?      
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An unfair coin is such that on any given toss, the probability of getting heads is...
An unfair coin is such that on any given toss, the probability of getting heads is 0.6 and the probability of getting tails is 0.4. The coin is tossed 8 times. Let the random variable X be the number of times heads is tossed. 1. Find P(X=5). 2. Find P(X≥3). 3. What is the expected value for this random variable? E(X) = 4. What is the standard deviation for this random variable? (Give your answer to 3 decimal places) SD(X)...
Toss the coin four times. If the coin lands either all heads or all tails, reject...
Toss the coin four times. If the coin lands either all heads or all tails, reject H0: p=1/2. (The p denotes the chance for the coin to land on heads.) Complete parts a and b. (a) What is the probability of a Type I error for this procedure? (b) If p = 4/5, what is the probability of a Type II error for this procedure?
Suppose you toss a fair coin three times. Which of the following events are independent? Give...
Suppose you toss a fair coin three times. Which of the following events are independent? Give mathematical justification for your answer.     A= {“heads on first toss”}; B= {“an odd number of heads”}. A= {“no tails in the first two tosses”}; B=     {“no heads in the second and third toss”}.
I toss a biased coin 15 times, with a probability of heads: ? = 0.25. Let...
I toss a biased coin 15 times, with a probability of heads: ? = 0.25. Let x equal the number of heads I toss. The probability I toss at least 2 heads is _________________ (3 points)
Suppose you are flipping an unfair coin 10 times. Let p be the probability of getting...
Suppose you are flipping an unfair coin 10 times. Let p be the probability of getting tails for said coin. Define X to be the number of heads obtained. (a.) Describe the sample space S. (b.) Give the values x for X. (c.) Find the likelihood of rolling exactly four heads. (d.) Find fX(x) .
You toss a fair coin four times. The probability of two heads and two tails is
You toss a fair coin four times. The probability of two heads and two tails is
You toss a fair coin six times. What is the probability that at least one toss...
You toss a fair coin six times. What is the probability that at least one toss results in a tail appearing? Round your answer to four decimal places.
Suppose you toss an unfair coin 8 times independently. The probability of getting heads is 0.3....
Suppose you toss an unfair coin 8 times independently. The probability of getting heads is 0.3. Denote the outcome to be 1 if you get heads and 0 if you get tails. 1.Write down the sample space. 2. What is the probability of the event that you get a head or a tail at least once? 3. If you get 8 same toss you will get x dollars, otherwise you will lose one dollar. On average, how large should x...
Toss a fair coin for three times and let X be the number of heads. (a)...
Toss a fair coin for three times and let X be the number of heads. (a) (4 points) Write down the pmf of X. (hint: first list all the possible values that X can take, then calculate the probability for X taking each value.) (b) (4 points) Write down the cdf of X. (c) (2 points) What is the probability that at least 2 heads show up?
A coin is tossed 6 times. What is the probability that the number of heads obtained...
A coin is tossed 6 times. What is the probability that the number of heads obtained will be between 2 and 3 inclusive? Express your answer as a fraction or a decimal number rounded to four decimal places. PLEASE DON'T ANSWER UNLESS YOU ARE CONFIDENT YOU KNOW THE SOLUTION.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT