Question
For each part, decide whether the blank should be filled in with =, , and give a clear explanation. In (a) and (b), order doesn't
For each part, decide whether the blank should be filled in with =, , and give a
clear explanation. In (a) and (b), order doesn't matter.
(a) (number of ways to choose 5 people out of 10) (number of ways to choose 6
people out of 10)
(b) (number of ways to break 10 people into 2 teams of 5) (number of ways to
break 10 people into a team of 6 and a team of 4)
(c) (probability that all 3 people in a group of 3 were born on January 1) (probability that in a group of 3 people, 1 was born on each of January 1, 2, and 3)
Martin and Gale play an exciting game of "toss the coin," where they toss a fair coin
until the pattern HH occurs (two consecutive Heads) or the pattern TH occurs
State whether each of the following is true or false.
a. Graphs, tables, and summary statistics all illustrate the application of inferential statistics.
b. Inferential statistics are procedures used to
make inferences about a population, given
only a limited amount of data.
c. Descriptive statistics can be used to describe
populations and samples of data.
13. A researcher measured behavior among all individuals in some small population. Are inferential
statistics necessary to draw conclusions concerning this population? Explain.
14. Appropriately use the terms sample and population to describe the following statement: A statistics class has 25 students enrolled, but only 23
students attended class.
15. On occasion, samples can be larger than the population from which it was selected. Explain why
this can't be true.
16. A researcher demonstrates that eating breakfast in
the morning causes increased alertness throughout the day. What research design must the
researcher have used in this example? Explain.
17. A researcher measures the height and income of
participants and finds that taller men tend to
earn greater incomes than shorter men. What
type of research method did the researcher use in
this example? Explain.
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