The sample average: Question 1 options: is equal to the population mean is an estimate of the population mean Question 2 (1 point) Saved The sample mean is normally distributed: Question 2 options: if the distribution of the population data is fairly symmetrical and there are at least 15 observations in the sample only if there are more than 30 observations in the sample only if the population data is normally distributed Question 3 (1 point) Saved The sample average is a more precise estimator of the population mean if there is: Question 3 options: more variation in the data less variation in the data Question 4 (1 point) Saved The sample average is a more precise estimator of the population mean if the sample size is: Question 4 options: large small Question 5 (1 point) Saved Because you use the sample standard deviation (s) as an estimate of the true standard deviation (), the critical value used to construct a confidence interval for the mean is from the: Question 5 options: A) z-distribution B) t-distribution C) Chi-square distribution D) F-distribution Question 6 (1 point) Saved A (1 - )% confidence interval for the population mean is centered at: Question 6 options: the sample average the population mean zero Question 7 (1 point) Saved Given a (1 - )% confidence interval for the population mean there is: Question 7 options: (1 - )% probability that the population mean will lie within the confidence int