91 people whowritewiththeirlefthand were given cognitive tests. It was discovered that those participants who were given a suggestion thehandtheywritewith might affect their performance on the test actually did worse on the test.

Identify the population and the population parameter of interest.

A. The population is the 91 people studied; population parameters are test scores for the 91 people studied, categorized by whether or not each individual was given a suggestion.

B. The population is allpeoplewhowritewiththeirlefthand; population parameters are test scores for all people, categorized by whether or not each individual was given a suggestion.

C. The population is allpeoplewhowritewiththeirlefthand; population parameters are test scores for the 91 people studied, categorized by whether or not each individual was given a suggestion.

D. The population is the 91 people studied; population parameters are test scores for all people, categorized by whether or not each individual was given a suggestion.

Describe the sample and sample statistic for the study.

A. The sample is the 91 people studied; the sample statistic is the test scores for all people, categorized by whether or not each individual was given a suggestion.

B. The sample is allpeoplewhowritewiththeirlefthand; the sample statistic is the test scores for all people, categorized by whether or not each individual was given a suggestion.

C. The sample is allpeoplewhowritewiththeirlefthand; the sample statistic is the test scores for the 91 people studied, categorized by whether or not each individual was given a suggestion.

D. The sample is the 91 people studied; the sample statistic is the test scores for the 91 people studied, categorized by whether or not each individual was given a suggestion.

What type of study would this be?

A. Random sample

B. Single blind

C. Experiment

D. Observation