The following Confidence Interval upper and lower limits were calculated in order to estimate the population mean average hourly salary of Starbucks baristas. Assume all of the assumptions (conditions) were met. How did the computer use the critical value T-score and the Standard Error in order to calculate the Margin of Error? Confidence Level = 99% Lower Limit = $8.19 Upper Limit = $15.07 Sample Mean = $11.63 Margin of Error = $3.44 Standard Error = $1.261 Critical Value T-score = 2.728 Degrees of Freedom = 34

Use the following sample proportion and margin of error to calculate the upper limit of the confidence interval.  Do not round your answer. Upper Limit = Sample Proportion + Margin of Error Sample Proportion = 0.0875 Margin of Error = 0.0119

Which of the following is NOT an assumption (condition) for sample data being good enough to estimate the population percentage (proportion) with a confidence interval?

The following Confidence Interval upper and lower limits were calculated in order to estimate the percentage (proportion) of animals in a region of Alaska may be infected. Assume all of the assumptions (conditions) were met. How did the computer use the sample proportion and margin of error to calculate the upper and lower limits of the confidence interval? Confidence Level = 95% Lower Limit = 0.087 Upper Limit = 0.134 Sample Proportion = 0.1105 Margin of Error = 0.0235 Standard Error = 0.01199 Critical Value Z-score = 1.96

What percent of confidence intervals created with a 90% confidence level will NOT contain the population parameter?

Which type of sample data do we need if we want to estimate a population mean with a confidence interval?

Use the upper and lower limit of the confidence interval and the following formula to calculate the margin of error. Do not round your answer.  Do not convert the proportions into percentages. Lower Limit = 0.0785 Upper Limit = 0.0813 Margin of Error = 

The following Confidence Interval upper and lower limits were calculated in order to estimate the percentage (proportion) of animals in a region of Alaska may be infected. Assume all of the assumptions (conditions) were met. True or False?  The population percentage of infected animals is exactly 11.05%. Confidence Level = 95% Lower Limit = 0.087 Upper Limit = 0.134 Sample Proportion = 0.1105 Margin of Error = 0.0235 Standard Error = 0.01199 Critical Value Z-score = 1.96    

Match the following definition to the correct term below. Take many random samples from one real random sample with replacement, calculate a sample statistic like a mean, median, or proportion from each sample and graph all of the sample statistics on the same graph.

Use the following sample mean and margin of error to calculate the upper limit of the confidence interval.  Do not round your answer. Upper Limit = Sample Mean + Margin of Error Sample Mean = 9.387 Margin of Error = 1.946