A hypothesis that states "Children who attend pre-school have larger vocabularies than children

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Question

A hypothesis that states "Children who attend pre-school have larger vocabularies than children who do not attend pre- school" is an example of a a. null hypothesis. b. directional (i.e., one-tailed) hypothesis. c. non-directional (i.e., two-tailed) hypothesis. d. bidirectional (i.e., two-tailed) hypothesis. QUESTION 4 An example of a random sample is a. volunteers from an introductory psychology class. b. respondents to an advertisement for participants on social media. c. every twenty-third person listed in the college directory. d. students selected from the college directory so that each student is equally likely to be selected. QUESTION 5 A procedure that measures what it purports to measure is said to be a. invalid. b. unreliable. c. valid. d.reliable.

          A hypothesis that states "Children who attend pre-school have larger vocabularies than children who do not attend pre-
school" is an example of a
a. null hypothesis.
b. directional (i.e., one-tailed) hypothesis.
c. non-directional (i.e., two-tailed) hypothesis.
d. bidirectional (i.e., two-tailed) hypothesis.
QUESTION 4
An example of a random sample is
a. volunteers from an introductory psychology class.
b. respondents to an advertisement for participants on social media.
c. every twenty-third person listed in the college directory.
d. students selected from the college directory so that each student is equally likely to be selected.
QUESTION 5
A procedure that measures what it purports to measure is said to be
a. invalid.
b. unreliable.
c. valid.
d.reliable.

A hypothesis that states "Children who attend pre-school have larger vocabularies than children who do not attend pre-
school" is an example of a
a. null hypothesis.
b. directional (i.e., one-tailed) hypothesis.
c. non-directional (i.e., two-tailed) hypothesis.
d. bidirectional (i.e., two-tailed) hypothesis.
QUESTION 4
An example of a random sample is
a. volunteers from an introductory psychology class.
b. respondents to an advertisement for participants on social media.
c. every twenty-third person listed in the college directory.
d. students selected from the college directory so that each student is equally likely to be selected.
QUESTION 5
A procedure that measures what it purports to measure is said to be
a. invalid.
b. unreliable.
c. valid.
d.reliable.

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