please solve b and c part i) 0,25. For rand population, obta Jon distribution of X...
99 and standard deviation σ A population whose distribution is unknown has mean μ and a sample of size 26 is drawn from this population, then 1, a. The mean oJ a b. The standard error ot c. The distribution of A population whose distribution is unknown has mean μ = 99 and standard deviation σ = 7 and a sample of size 26 is drawn from this population, then 1, a. b. c. The mean of X= The standard...
sand, approximately. If a random sample of n -100 men was drawn to estimate u, what would be the standard error of X? b. The population of men in California is about 1/10 as large, but suppose it had the same mean and standard deviation. If a random sample of n -100 was drawn, what would be the standard error of X now? 6-7 Continuing Problem 6-6, the population size was 78 million. If a 1% sample was taken (i.e.,...
Consider random samples of size 265 drawn from population A with proportion 0.13 and random samples of size 285 drawn from population B with proportion 0.31. (a) Find the standard error of the distribution of differences in sample proportions, p A D B. Round your answer for the standard error to three decimal places. standard error Consider random samples of size 86 drawn from population A with proportion 0.44 and random samples of size 66 drawn from population B with...
Part B A sample mean, sample size, population standard deviation, and confidence level are provided. Use this information to complete parts (a) through (c) below. x=52, n = 13,0-6, confidence level = 99% Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. a. Use the one mean z-interval procedure to find a confidence interval for the mean of the population from which the sample was...
PART 1 Let X represent the average age of people living in Sun City. Assume that X has a normal probability distribution with μ=72 years and σ=10 years. You intend to measure a random sample of n=51 people. What is the mean of the distribution of sample means? μ¯x= What is the standard deviation of the distribution of sample means (i.e., the standard error in estimating the mean)? (Report answer accurate to 2 decimal places.) σ¯x= PART 2 In a...
Help with part e. A random sample of 36 observations is drawn from a population with a mean egun to 25 and A standard deviation equal to 6. Complete parts a through below a. Glve the mean and standard deviation of the repeated samping distribution : - 25 (Type inlagers or decimals. b. Describe the shape of the sampling darbution of R. Does this answer depend on the sample size? Choose the correct answer below A. The shape is that...
= X- 4) A normal distribution has mean u = 65 and a population standard deviation o= 20. Find and interpret the z - Score for x = 64. u a) The z - score for x = 64 is 64-65 b) Interpret these results. (Explain): 5) A sample size 28 will be drawn from a population with mean 120 and standard deviation 21. a) Is it appropriate to use the normal distribution to find probabilities for x? yes or...
A population of values has a normal distribution with μ=104.4μ=104.4 and σ=5.3σ=5.3. You intend to draw a random sample of size n=16n=16. What is the mean of the distribution of sample means? μx¯= What is the standard deviation of the distribution of sample means (i.e. the standard error)? (Report answer accurate to 2 decimal places.) σ¯x=
A sample mean, sample size, population standard deviation, and confidence level are provided. Use this information to complete parts (a) through (c) x = 33, n = 25, C = 6, confidence level = 90% Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table a. Use the one-mean z-interval procedure to find a confidence interval for the mean of the population from which the sample...
A population of values has a normal distribution with μ=89.8 and σ=85.9. You intend to draw a random sample of size n=131. What is the mean of the distribution of sample means? μx¯= What is the standard deviation of the distribution of sample means (i.e. the standard error)? (Report answer accurate to 2 decimal places.) σ¯x=