c. for a single mean.
d. of two means when samples are dependent.
e. None of the above.
A parameter represents
a. the geographical boundary of a population.
b. certain characteristics of a random sample.
c. fixed characteristics of a population.
d. fixed characteristics of a nonprobability sample.
e. an unbiased estimator of the population mean.
You are coding a survey that ask the question:”Please tell us your age:
“____________where the respondent fill in the blank with a number corresponding to
his or her age. The best way to code this information is
a. using narrow categories, such as: Under 18, 19-21, 22-25, 26-29, 30-33, etc.
b. recording the actual age.
c. using broad categories, such as: Under 20, 20-29, 30-39, 40-49, etc. d. a or b.
e. a or c.