Identify the following: a. x - = _____ b. = _____ c. n = _____ The

Identify the following:

a. x - = _____

b. σ = _____

c. n = _____ The standard deviation of the weights of elephants is known to be approximately 15 pounds. We wish to construct a 95% confidence interval for the mean weight of newborn elephant calves. Fifty newborn elephants are weighed. The sample mean is 244 pounds. The sample standard deviation is 11 pounds.