Constructing a confidence interval for population mean

Related BrainMass Solutions

• Constructing the 99% confidence interval for the population mean

  So a 99% confidence interval for the population mean is [60-2.656*16/sqrt(64), [60+2.656*16/sqrt(64)]=[54.69, 65.31] The solution gives detailed steps on constructing the 99% confidence interval for the population mean.

• Construction of confidence intervals and proper interpretation

  Example: Here we present an example of constructing the 95% confidence interval using the normal distribution for a population mean.

• Constructing Confidence Intervals For Stats Students

  Construct a 68.26% confidence interval for the mean of the population. b. Construct a 97% confidence interval for the mean of the population.

• Building a Desk, 8 hours, two people, sample of 40

  Determine a 90 percent confidence interval for the population mean. For a 90 percent confidence level, z=1.645. Given xbar=8, sigma=3 and n=40. By a formula, we can get a 90 percent confidence interval for the population mean as follows.

• Confidence interval for a population mean

  90640 Confidence interval for a population mean A researcher wishes to construct a 95% confidence interval for a population mean. She selects a simple random sample of size n=20 from the population.

• Constructing confidence intervals for population proportion

  ., , namely, mean and standard deviation . So, the 99 percent confidence interval for the population proportion is where z=2.576.

• Levels of Confidence and Intervals

  We can use the sample mean as a point estimate for μ. • Find the 90% confidence interval for the population mean length. For the 90% confidence level, z=1.645.

• Constructing a 95% confidence interval normally distributed

  463145 Constructing a 95% confidence interval If x bar =75, S = 24, and n = 36, and assuming that the population is normally distributed, construct a 95% confidence interval estimate of the population mean, µ.

• Constucting the confidence interval for mean

  498071 Constructing the confidence interval for mean The following data values are a simple random sample from a population that's normally distributed with (symbol for variance) o2=4.0: 11,6,8,12 and 13.