poisson distribution population mean=3 sample size=36 Question: what is the probability that the average number of...
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poisson distribution
population mean=3
sample size=36
Question: what is the probability that the average number of...
QUESTION 7 A sample of size 36 is chosen from a population. Assume the probability distribution...
QUESTION 7 A sample of size 36 is chosen from a population. Assume the probability distribution is normal if the mean of the sample is 50 and the standard deviation is 6, find the lower bound of the 99% confidence interval Round off to three decimal places
A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10
A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10. * a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape of this sampling distribution. * b. Find the mean of this sampling distribution. * c. Find the standard error of this sampling distribution. * d. What is the...
The number of errors in a sequence follows a Poisson distribution. The average number of errors...
The number of errors in a sequence follows a Poisson distribution. The average number of errors in 50 members of the sequence is 1.2. (a) What is the probability of exactly three flaws in 150 members of the sequence? (b) What is the probability of exactly one flaw in the first 50 members of the sequence and exactly one flaw in the second 50 members of the sequence? Since this is a Poisson distribution the two parts of the sequences...
The number of inclusions in cast iron follows a Poisson distribution with a mean of 2,500...
The number of inclusions in cast iron follows a Poisson distribution with a mean of 2,500 per cubic centimeter. Poisson Distribution (pmf): 1.X e f(x) = P(X = x) = for x = 0,1,2,... (a) Determine the mean and standard deviation of the number of inclusions in a cubic centimeter. (b) Approximate the probability that less than or equal to 2600 inclusions occur in a cubic centimeter. (Hints: use the normal approximation method.) (c) Approximate the probability that greater than...
Question 2 (5 points) Suppose that a sample of size 58 is drawn from a population...
Question 2 (5 points) Suppose that a sample of size 58 is drawn from a population with mean 55 and standard deviation 38 . Find the value of o,, the standard deviation of the distribution of sample means. Write only a number as your answer. Round to two decimal places (for example: 8.21). Your Answer Answer Question 3 (5 points) The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of...
1) A sample of size 25 is chosen from a population. Assume the probability distribution is...
1) A sample of size 25 is chosen from a population. Assume the probability distribution is normal. If the mean of the sample is 80 and the standard deviation is 6, find the lower bound of the 99% confidence interval. Round off to three decimal places. 2) A sample of size 36 is chosen from a population. The sample mean is 50 and the standard deviation is 5. Find the upper limit of the 95% confidence interval for the population...
The number of visits to a website follows a poisson distribution with an average of 90...
The number of visits to a website follows a poisson distribution with an average of 90 per hour. What is the probability that there will be at least 2 visits in one minute? What is the probability that the time between successive visits will be less than 0.5 minutes?
5.4.1 Question Help A population has a mean μ-84 and a standard deviation σ-36. Find the...
5.4.1 Question Help A population has a mean μ-84 and a standard deviation σ-36. Find the mean and standard deviation of a sampling distribution of sample means with sample size n 81. μί-d (simplify your answer.) 5.4.18-T Question Help I * The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If convenient, use technology to find the probability For a sample...
According to a recent Current Population Reports, the population distribution of number of years of education...
According to a recent Current Population Reports, the population distribution of number of years of education for self-employed individuals in the United States has a mean of 13.9 and a standard deviation of 2.3. (a) Identify the variable. -number of years of education -number of educated individuals in the United States -number of self-employed individuals in the United States -number of self-employed individuals (b) Find the mean and standard deviation of the sampling distribution of for a random sample of...
Answer and sketch questions 1 and 2 1. a) A random sample of size 36 is...
Answer and sketch questions 1 and 2
1. a) A random sample of size 36 is selected from a normally distributed population with a mean of 16 and a standard deviation of 3. What is the probability that the sample mean is somewhere between 15.8 and 16.2? b). A normally distributed population has a mean of 16 and a standard deviation of 3. What is the probability that a single event is somewhere between 15.8 and 16.2? 2. A bank...
QUESTION 7 A sample of size 36 is chosen from a population. Assume the probability distribution is normal if the mean of the sample is 50 and the standard deviation is 6, find the lower bound of the 99% confidence interval Round off to three decimal places
The number of inclusions in cast iron follows a Poisson distribution with a mean of 2,500 per cubic centimeter. Poisson Distribution (pmf): 1.X e f(x) = P(X = x) = for x = 0,1,2,... (a) Determine the mean and standard deviation of the number of inclusions in a cubic centimeter. (b) Approximate the probability that less than or equal to 2600 inclusions occur in a cubic centimeter. (Hints: use the normal approximation method.) (c) Approximate the probability that greater than...
Question 2 (5 points) Suppose that a sample of size 58 is drawn from a population with mean 55 and standard deviation 38 . Find the value of o,, the standard deviation of the distribution of sample means. Write only a number as your answer. Round to two decimal places (for example: 8.21). Your Answer Answer Question 3 (5 points) The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of...
5.4.1 Question Help A population has a mean μ-84 and a standard deviation σ-36. Find the mean and standard deviation of a sampling distribution of sample means with sample size n 81. μί-d (simplify your answer.) 5.4.18-T Question Help I * The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If convenient, use technology to find the probability For a sample...
Answer and sketch questions 1 and 2
1. a) A random sample of size 36 is selected from a normally distributed population with a mean of 16 and a standard deviation of 3. What is the probability that the sample mean is somewhere between 15.8 and 16.2? b). A normally distributed population has a mean of 16 and a standard deviation of 3. What is the probability that a single event is somewhere between 15.8 and 16.2? 2. A bank...
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