Product researchers studied the relationship between their cola and a composite happiness scale. The null hypothesis was retained. They should state that
a. drinking their cola does not cause depression.
b. their cola has no relationship to the happiness of its drinkers.
c. there is not enough evidence to suggest a relationship between drinking their cola and happiness.
d. their design was not powerful enough to find a significant relationship
ANS: C
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"Natural sand" that has been sterilized is best to use in sandboxes because other sands may contain ____________________
Fill in the blank(s) with correct word
If there is a tie vote on an appeal from the decision of the chair, it sustains the chair
a. True b. False Indicate whether the statement is true or false
Advocates of single-sex education agree that
a. There are obvious cognitive reasons to uphold sex-segregated education. b. There may be social reasons to uphold sex-segregated education. c. Sex-segregated education would benefit girls who suffer from learning disabilities and attention deficit disorder. d. There is ample research evidence that sex-segregated education can remedy sexism.
What are four possible explanations for tiredness?
What will be an ideal response?