Author Question: A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that ... (Read 199 times)

strangeaffliction · **on:** Jun 24, 2018

A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard deviation of the contents (i.e., of the population) is 0.22 ounces. In this problem, the .22 is _____.
a. a parameter
b. a statistic
c. the standard error of the mean
d. the average content of colognes in the long run

Question 2

There is a lower limit but no upper limit for a random variable that follows the _____ probability distribution.
a. uniform
b. normal
c. exponential
d. binomial