6. (8 points) Find the minimum sample size needed if we wish to be 90% confident...
Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and sigma=19.3. Assume the population is normally distributed. A 90 % confidence level requires a sample size of nothing. (Round up to the nearest whole number as needed.)
Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and sigma=19.8. Assume the population is normally distributed. A 90 % confidence level requires a sample size of?
Q1. Determine the minimum sample size required when you want to be 95% confident that the sample mean is within 1.3 unites of the population mean. Assume that the population is normally distributed with standard deviation σ = 5.1. a. The critical value: b. The margin of error: c. The sample size:
Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and standard deviation is 15.9. Assume the population is normally distributed.
If you want to be 95% confident of estimating the population mean to within a sampling error of plus or minus ±15 and the standard deviation is assumed to be 90, what sample size is required?
A) If you want to be 95% confident of estimating the population mean to within a sampling error of plus or minus 2 and the standard deviation is assumed to be 16, what sample size is required? The sample size required is _____ (Round up to the nearest integer.) B) If you want to be 95% confident of estimating the population proportion to within a sampling error of plus or minus 0.06, what sample size is needed? A sample size...
Determine the minimum sample size required when you want to be 99% confident that the sample mean is within one unit of the population mean and sigma equals 16.3. Assume the population is normally distributed.
If you want to be 99 % confident of estimating the population mean to within a sampling error of ±20 and the standard deviation is assumed to be 80, what sample size is required? The sample size required is ___.
What is the minimum sample size required to estimate a population mean with 90% confidence if the population standard deviation is estimated to be 30 and the desired margin of error is 2?
1. What sample size is needed to estimate the mean white blood cell count (in cells per (1 poin microliter) for the population of adults in the United States? Assume that you want 99% confidence that the sample mean is within 0.2 of population mean. The population standard deviation is 2.5. O 601 1036 O 1037 O 33 2. The sample space of a population being researched contains 58 values and a mean of 318.6. (point The population has a...