650 people and matched their personality type to when in the year they were born. They discovered that the number of people with a "cyclothymic" temperament, characterized by rapid, frequent swings between sad and cheerful moods, was significantly
higher
higher in those born in the
summer
summer. The study also found that those born in the
spring
spring were less likely to be
irritable
irritable, while those born in
winter
winter were
more
more likely to be
excessively positive
excessively positive. Complete parts (a) through (e) below.
(a) What is the research question the study addresses?

A.
Are people born in
spring
spring
irritable
irritable?

B.
Does year of birth affect mood?

C.
Are people born in
winter
winter
excessively positive
excessively positive?

D.
Does season of birth affect mood?

(b) What is the sample?

A.
The
650
650 people who are
excessively positive
excessively positive,
irritable
irritable, or have mood swings

B.
All people born in the
winter
winter

C.
The
650
650 people in the study

D.
All people

(c) What type of variable is the season in which you were born?

A.
Quantitative, discrete, interval

B.
Quantitative, continuous, interval

C.
Qualitative, ordinal

D.
Qualitative, nominal

E.
Quantitative, continuous, ratio

F.
Quantitative, discrete, ratio

(d) What can be said (in general) about individuals born in
summer
summer?
Winter
Winter?

People born in
summer
summer are
▼

more likely
less likely
to
▼

be irritable.
be excessively positive.
have mood swings.
be depressive.
What can be said (in general) about individuals born in
winter
winter?

People born in
winter
winter are
▼

less likely
more likely
to
▼

be depressive.
be excessively positive.
have mood swings.
be irritable.

(e) What conclusion was drawn from the study?

A.
Year of birth plays no significant role in one's temperament.

B.
Season of birth plays a role in one's temperament.

C.
Being born in
spring
spring makes one
irritable
irritable.

D.
Being born in winter
winter makes one
excessively positive
excessively positive.