Which researchers conducted the landmark studies on bystander apathy and found that the more potential helpers present, the less likely people are to help?

Initial reports in the media that listening to classical music

made students more intelligent were followed by several failed attempts to reproduce the effects in the laboratories of other researchers. This is an example of the failure to A) accurately communicate. B) achieve parsimony. C) correlate. D) replicate.

A researcher administers a treatment to a sample of participants selected from a population with µ = 80. If a hypothesis test is used to evaluate the effect of the treatment, which combination of factors is most likely to result in rejecting the null hypothesis?

A) ?A sample mean near 80 with ? = .05 B) ?A sample mean near 80 with ? = .01 C) ?A sample mean much different than 80 with ? = .05 D) ?A sample mean much different than 80 with ? = .01