Blog

Solve the problem.The following confidence interval is obtained for a population proportion, p: 0.439 < p < 0.473. Use these confidence interval limits to find the point estimate, .

Which side won the battle of Kennesaw Mountain?

Find the indicated critical z value.Find the critical value zα/2 that corresponds to a 98% confidence level.

The XYZ Affair almost caused:

Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ. Assume that the population has a normal distribution. Round the confidence interval limits to the same number of decimal places as the sample standard deviation.Weights of men: 90% confidence; n = 14,  = 156.1 lb, s = 11.4 lb

Abraham Lincoln was born in the state of

Solve the problem.Find the critical value  corresponding to a sample size of 3 and a confidence level of 95 percent.

Vicksburg, Mississippi was captured by what Union general

Solve the problem.A hypothesis test is performed to test the claim that a population proportion is greater than 0.7. Find the probability of a type II error, β, given that the true value of the population proportion is 0.72. The sample size is 50 and the significance level is 0.05.

The American Temperance Society concerned itself mainly with: