A random sample of 144 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 0.3 ounces. In this problem the 0.3 is O a. the standard error of the mean. O b. a statistic. O c. the average content of colognes in the long run. O d. a parameter.When some segments of the population are either more or less likely to respond to the survey mechanism is which of the following nonsampling errors? O a. Measurement error O b. Nonresponse error O c. Coverage error O d. Research errorWhich of the following probability distributions have the same value for mean, median, and mode? O a. Poisson O b. Normal O c. Uniform O d. ExponentialWhich of the following symbols represents the mean of the population? Oa. u Ob. o I Od