Question

- Suppose you flip eight fair coins.

- What is the probability of flipping exactly eight heads?
- What is the probability of flipping at least four heads?
- What is the probability of flipping at most seven heads?
- What is the probability of flipping less than three heads?
- What is the probability of flipping more than one head?

Step 1

In a coin tossing the probability of getting a head and tail is equal and the corresponding probability of each is equal to ½. Here the eight coin are tossed. Let X be the probability of getting heads. Thus, it follows a binomial distribution with n=8 and p=1/2. That is,

Step 2

**1.Finding the probability of flipping exactly eight heads:**

The probability of flipping exactly eight heads is **0.0039** and is obtained as follows:

Step 3

**2.Finding the probability of flipping at least 4 heads:**

The probability of flipping exactly...

Tagged in

Q: In our Brockport sample of college students, the greatest number of weekend drinks observed was 6.00...

A: Z score for 6 weekend drinks is,

Q: Please give step by step in TI 84

A: Consider X to be the random variable, defined as transformed ratio of the return rates that follows ...

Q: I'm having trouble with probabilities. To be more specific it starts with the three terms of 1) Actu...

A: In probabilityodds against is given by

Q: You are testing the null hypothesis µ=55 versus the two tailed alternative. You fail to reject the n...

A: It is given that,Null Hypothesis : µ = 55Alternative hypothesis : µ ≠ 55

Q: What percentage of z-scores in the standard normal distribution are greater than z = -.61?

A: If a random variable x has a distribution with mean µ and standard deviation σ, then the z-score is ...

Q: what is variance? How do you calculate variance?

A: Variance:Variance is the average of squared difference of sample points from their mean. It is a mea...

Q: In Problems 21 and 22, (a) construct a discrete probability distribution for the random variable X [...

A: Given data and calculation for probability, mean and standard deviation is shown below

Q: The total cholesterol levels for women aged 20 to 30 years are normally distributed with µ=190 mg/dl...

A: The provided information is:

Q: You have 3 quarters and 4 dimes in your pocket. You draw two out at random. What is the expected val...

A: The value of 1 quarter is 25 cents and 1 dime is 10 cents.It is mentioned that two coins are drawn r...

Sorry about that. What wasn’t helpful?