Question

Asked Oct 26, 2019

18 views

- 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?

Please do not solve using Microsoft Excel. My professor is not teaching through excel and I would like to see the steps and formula for solving the problem.

Step 1

**Binomial distribution:**

The events that has exactly two possible outcomes (success or failure) follows binomial distribution with parameter *n* and *p*. The probability mass function of binomial distribution is as follows:

Step 2

**Computation of probability of flipping exactly eight heads:**

Here, *n=*8

The probability of getting heads in a fair coin is 0.5 (=1/2).

The probability of flipping exactly eight heads is obtained as** 0.0039**, from the calculation given below:

Step 3

**Computation of probability of flipping at least four heads:**

The probability of flipping at least four heads is ...

Tagged in

Q: a normal population has mean=56 and standard deviation= 8. what is the 85th percentile of the popula...

A: Solution:From the given information, normal distribution has population standard deviation 8 and pop...

Q: What values of F indicate that the null hypothesis is true?

A: F-values are calculated value

Q: Will you help me with this one again? When I tried doing it myself, I wasn't getting the correct ans...

A: Solution:Binomial distribution:The binomial distribution gives the probability of number of successe...

Q: Student loans: the institute for college access and success reported that 68% of college students in...

A: a.The mean of the sampling distribution:

Q: what is the mean and standard deviation of the following sample: 18, 1, 5, 1, 5

A: Solution:The mean is obtained below:The sample mean is 6.

Q: In a study of the accuracy of fast food drive-through orders, Restaurant A had 241 accurate orders ...

A: The formula for the 95% confidence interval for the proportion is given below:

Q: figure Sdifference for each ot the following studies (only a, b, and c)

A: a)The value of s2pooled is shown below:

Q: Estimate the indicated probability by using the normal distribution as an approximation to the binom...

A: Binomial approximation:The normal distribution can be used as an approximation to the binomial distr...

Q: The undergraduate admission rate at a certain university for a certain year was 7%. a. Assuming ...

A: a.The probability that exactly 8 out of 100 applicants will be admitted is obtained below:From the g...