If X=95, S =5, and n = 49, and assuming that the population is normally distributed,...
If X-67, S-20, and n-49, and assuming that the population is normally distributed, construct a 99% confidence interval estimate of the population mean, μ Click here to view page 1 of the table of critical values for the tdistribution Click here to view page 2 of the table of critical values for the t distribution (Round to two decimal places as needed.)
If X (bar over) = 65, S = 14, n = 49, and assuming that the population is normally distributed construct a 95% confidence interval estimate of the population mean. ( I have the table of critical values for the t distribution but I do understand how to find the solution and plug it in to the formula. Please show all steps and explain how to find it.)
8.1.1 Question Help Assuming the population of interest is approximately normally distributed, construct a 95% confidence interval estimate for the population mean given the values below. x=16.9 3= 4.3 n=12 The 95% confidence interval for the population mean is from to (Round to two decimal places as needed. Use ascending order.)
Question Help 8.1.1 Assuming the population of interest is approximately normally distributed, construct a 96% confidence interval estimate for the population mean given the values below. X = 16.9 54.3 ns12 The 95% confidence interval for the population mean is from to (Round to two decimal places as needed. Use ascending order.)
Salaries of 49 college graduates who took a statistics course in college have a mean, x, of $67,200. Assuming a standard deviation, o, of $15,485, construct a 95% confidence interval for estimating the population mean u. Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. $ <u<$ (Round to the nearest integer as needed.)
A random sample of size n = 13 obtained from a population that is normally distributed results in a sample mean of 45.2 and sample standard deviation 12.6. An independent sample of size n=17 obtained from a population that is normally distributed results in a sample mean of 51.1 and sample standard deviation 14.9. Does this constitute sufficient evidence to conclude that the population means differ at the a= 0.10 level of significance? Click here to view the standard normal...
Assuming that the population is normally distributed, construct a 95% confidence interval for the population mean, based on the following sample size of .n=7. 1, 2, 3, 4, 5, 6, and 15 <-----this is the data In the given data, replace the value 15 with 7 and recalculate the confidence interval. Using these results, describe the effect of an outlier (that is, an extreme value) on the confidence interval, in general. Find a 95% confidence interval for the population mean,...
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 107, and the sample standard deviation, s, is found to be 10. (a) Construct a 98% confidence interval about p if the sample size, n, is 22. (b) Construct a 98% confidence interval about u if the sample size, n, is 12. (c) Construct a 95% confidence interval about u if the sample size, n, is...
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 106, and the sample standard deviation, s, is found to be 10. (a) Construct a 90% confidence interval about u if the sample size, n, is 22. (b) Construct a 90% confidence interval about u if the sample size, n, is 27. (c) Construct a 99% confidence interval about u if the sample size, n, is...
A random sample of size n=12 obtained from a population that is normally distributed results in a sample mean of 455 and sample standard deviation 116 An independent sample of silen.17 obtained from a population that is normally distributed results in a sample mean of 528 and sample standard deviation 15.1. Does this constate suficient evidence to conclude that the population means differ at the a=0 10 level of significance? Click here to view the standard normal distribution table (page...