4. A family wants to use a simulation to find out the probability of having at l

Question

4. A family wants to use a simulation to find out the probability of having at leas one boy in their first three children. The digit assignment is even for a girl and odd for a boy. The random digits are given as 2731472867829684178912. What is the correct information about the second family in this simulation?

The first born was a girl, followed by a boy, followed by a girl.

The first born was a boy, followed by a girl, followed by a boy.

The first born was a boy, followed by a boy, followed by a boy.

The first born was a girl, followed by a girl, followed by a girl.

5. A mattress store boasts 4 out of 5 sleepers in a commercial that airs locally. I talked to the owner and found out he only talked to ten people. The situation listed above is an example of what?

Regressive

Stratification

Variation

Replication Blocking

6. A soda company runs a test to find out which flavor is chosen in a hidden test against its rival. The situation listed above is an example of what?

Regressive

Stratification

Replication

Blocking

Sponsorship

Explanation / Answer

4. The random number digits are given. Second family has to choose from the fourth digit in the random digits. The digit assignment for boy is odd and for girl is even. Therefore, the 3 children to be born are in order of 147, which implies firct child to be boy followed by a girl, followed by another boy. Option 2.

5. This scenario is not regressive, no relationship is measured between two variables, not variation, where, data is measured on basis of its' spread, even not replication, where the owner wanted to replicate what happened in general population. This is not even blocking, where, experimental units are arranged in blocks to reduce the effect of confounding variable. Thus, it is stratification, where, people have stratified into small group (of 10) or strata. The owner has spoken to each of the strata. Option 2.

6. This scenario is not regressive, no relationship is measured between two variables, not variation, where, data is measured on basis of its' spread, even not stratification, where, the entire group has been classified into small strata. This is not even blocking, where, experimental units are arranged in blocks to reduce the effect of confounding variable. Sponsorship is also seem not applicable, because, no mention of fund is made in the study. Thus, it is replication, where the soda company wanted to replicate what happened in general population. Option 3.

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