Find the mean and variance for the binomial distribution, P=0.56 and n= 8
Q: Fifty five percent of the students in a class of 135 of planning to go to graduate school, Find…
A: Answer: From the given data, Fifty five percent of the students are planning to go to graduate…
Q: Using table below, find the variance for licensed dogs per household in this county? Please show…
A: X012345P(X=x)0.590.110.090.070.02
Q: The weights of newborn baby boys born at a local hospital are believed to have a normal distribution…
A: Given that, Mean = 3915 Variance = 429025
Q: In a normal distribution, find the mean if the standard deviation is 100, and 70.19% of the total…
A: Given that the standard deviation is 100 and 70.19% of the total area lies to the right of 500. That…
Q: Suppose z is a normal random variable. If you need to find P ( Z > 1.84 ), explain how to shade the…
A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ, where µ and σ are the mean…
Q: Find variance of standard deviation 278
A: GivenStandard deviation(σ) = 278
Q: For a binomial distribution with n = 15 and p = 0.2, what is the standard deviation of the…
A:
Q: A random variable is binomially distributed with n= 16 and T= .40. The expected value and standard…
A: According to the given information, we have Sample size, n = 16 and Probability, π=0.40
Q: a. The mean number of checks written per day is (Round to three decimal places as needed.) b.…
A: From given data we have : Last year, a person wrote 129 checks. 1 year = 365 days
Q: For a normal distribution, find the z-score location that divides the distribution that separates…
A: From the given information, It has been given that, P (Z<z) = 0.40 Using the inverse probability…
Q: Given a binomial distribution with n = 420 and p = 0.65, what is the mean, variance, and standard…
A: Given a binomial distribution with n = 420 and p = 0.65
Q: binomial experiment is given. Decide whether you can use the normal distribution to approximate the…
A: Given P=0.81 n = 12 Since np=12*0.81=9.72 which is >5 so we can use the normal distribution…
Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…
A:
Q: The average number of words typed in 50 seconds is 54 which follows a Poisson distribution. Find…
A: The standard deviation for the number words typed in 107 seconds 10.75.Explanation:A Poisson…
Q: On average, a banana will last 6 days from the time it is purchased in the store to the time it is…
A: The question is about hypo. testing Given : Pop. avg. of a banana will last ( μ ) = 6 days Randomly…
Q: The average resident of Metro City produces 770 pounds of solid waste each year, and the standard…
A: We have to find probability
Q: Find the 42 -th percentile for the standard normal random variable Z
A: Solution Using standard normal table , P(Z < z) = 42% P(Z < z) = 0.42
Q: Please Find the mean and variance of Binomial variable X having p=0.09 and n=2.
A:
Q: A binomial experiment is given. Decide whether you can use the normal distribution to approximate…
A: Given p=0.56 n=40
Q: Explain why P(X = 2) = P(X = 3) in a binomial distribution where n = 5 and p = 0.5.
A: We have given the following statement about the binomial distribution.
Q: A binomial distribution happens such that q=4C2/100 and n=6C1.Find the square root of std deviation.
A: The objective of this question is to find the square root of the standard deviation of a binomial…
Find the
P=0.56 and n= 8
Step by step
Solved in 3 steps
- A binomial experiment is given. Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, find the mean and standard deviation. If you cannot, explain why. A survey of adults found that 61% have used a multivitamin in the past 12 months. You randomly select 50 adults and ask them if they have used a multivitamin in the past 12 months.Assume that adults have IQ scores that are normally distributed with a mean of 98.5 and a standard deviation of 16.9. Find the probability that a randomly selected adult has an IQ greater than 125.0Students visiting the cafeteria noticed that the diameters of donuts follow a normal distribution with a mean diameter of 3 inches and a standard deviation of 0.2 inches. Find the probability that a student will get a donut with diameter less than 3.2 inches. What is the 40th percentile for the diameters of donuts?
- The time that college students spend studying per week have a distribution that skewed to the right with a mean of 8.4 hours and a standard deviation of 2.7 hours. Find the probability that the mean time spent studying per week for a random sample of 40 is less than 7.5 hours.The distribution of sample variances tends to be a normal distribution. true or false?What position in the distribution corresponds to a z-score of z = +2.00?
- Service time for a customer coming through a checkout counter in a retail store is a random variable with the mean of 4.0 minutes and standard deviation of 2.0 minutes. Suppose that the distribution of service time is fairly close to a normal distribution. Suppose there are two counters in a store, n₁ = 46 customers in the first line and n₂ = 52 customers in the second line. Find the probability that the difference between the mean service time for the shorter line X₁ and the mean service time for the longer one X₂ is more than 0.3 minutes. Assume that the service times for each customer can be regarded as independent random variables. Round your answer to two decimal places (e.g. 98.76). P = !Last year, a person wrote 118 checks. Let the random variable x represent the number of checks he wrote in one day, and assume that it has a Poisson distribution. What is the mean number of checks written per day? What is the standard deviation? What is the variance?A binomial experiment is given. Decide whether you can use the normal distribution to approximate the binomial distribution. If you can, find the mean and standard deviation. If you cannot, explain why. A survey found that 88% of parents of teenagers have taken their teenager's cell phone or Internet privileges away as a punishment. You randomly select 20 parents of teenagers and ask them whether they have taken their teenager's cell phone or Internet privileges away as a punishment. Select the correct answer below and, if necessary, fill in the answer boxes to complete your choice. OA. Yes, the mean is and the standard deviation is (Round to two decimal places as needed.) OB. No, because nq < 5. OC. No, because np < 5.
- The probability that a patient recover from a rare blood disease is 0.6. It is known that 100 people have contracted this disease. It is desired to find the probability that less than one half survive. For easier computations, normal distribution is used to approximate this binomial distribution. Find the value of the standard deviation to be used in the computation.What is the standard deviation if the variance is 6.25? A, 2.5 B, 2.8 C. 3.5 D. 3.8Last year, a person wrote 116 checks. Let the random variable x represent the number of checks he wrote in one day, and assume that it has a Poisson distribution. What is the mean number of checks written per day? What is the standard deviation? What is the variance?
