A Student Is Interested in Whether Students Who Study with Others

question 12

Essay

A student is interested in whether students who study with others devote at much attention to their studies as do students who study alone. He believes those who study alone devote more attention to their studies. He randomly assigns participants to either group or individual study conditions and has them read and study the same passage of information for the same amount of time. Participants are then all given the same 10-item test on the material. Their scores appear below. Scores on the test represent interval/ratio data and are normally distributed.

a) What statistical test should be used to analyze these data?
b) Identify H₀ and H_a for this study.
c) Conduct the appropriate analysis.
d) Should H₀ be rejected? What should the researcher conclude?
e) If significant, compute the effect size and interpret this.
f) If significant, draw a graph representing the data.
g) Calculate the 95% CI.

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Definitions:

Ribosome

Complex molecular machines in cells that synthesize proteins by translating messenger RNA into amino acid sequences.

Binding Sites

Specific regions on molecules (e.g., enzymes, receptors) where other molecules (e.g., substrates, ligands) can attach or bind.

tRNAs

Small RNA molecules that transport amino acids to the ribosome during protein synthesis according to the sequence of a messenger RNA (mRNA) transcript.

RNA Polymerase

An enzyme that catalyzes the synthesis of RNA from a DNA template.