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# This project is meant to connect the aspects of research design and statistical analysis. For this project you are to read the article "The sound of intellect: Speech reveals a thoughtful mind,...

This project is meant to connect the aspects of research design and statistical analysis.

For this project you are to read the article "The sound of intellect: Speech reveals a thoughtful mind, increasing a job candidateâ€™s appeal", and be able to distill from the research article, the design, the hypothesis, the statistical test conducted and to interpret the results and conclusion.

Part1: deciphering the article:

Read the article, and indicate what the population, sample and hypotheses, dependent and independent variables, the statistics conducted for each experiment and overall conclusion.

Part 2: statistical analysis

Open the file for thedata from experiment 4and create the appropriate statistical analysis for the following comparisons. Please go through the 8 steps (or make sure to indicate that information for each comparison)

1. Compare participants in the audio condition to participants in the transcript condition on the Intellect_Rating variable.
2. Compare participants in the audio condition to participants in the transcript condition on the Impression_Rating variable.
3. Compare participants in the audio condition to participants in the transcript condition on the Hire_Rating variable.

BONUS POINTS (25):You will get up to 25 point onus for thinking of a creative extension of the finding/experiment/ continuation of the theoretical perspective, detailing experimental design, manipulation and procedure.

Answered Same Day Jul 19, 2021

## Solution

Biswajit answered on Jul 23 2021
Part 1 : Deciphering the article
We had multiple population & samples as described below.
Population -job candidates (MBA students/MA students/community members)
Sample -18 MBA students/job candidates of Chicago Booth School, 16 MA students & 40 community members (3 different samples)
Hypothesis test 1: (paired t test)
Null Hypothesis :Evaluation score by recruiters in spoken pitches is equal to evaluation score in written pitches
Alternative Hypothesis : Evaluation score by recruiters in spoken pitches is not equal to evaluation score in written pitches
Hypothesis test 2: (paired t test)
Null Hypothesis :Likelihhod of Hiring score by recruiters in spoken pitches is equal to evaluation score in written pitches
Alternative Hypothesis : Likelihood of hiring score by recruiters in spoken pitches is not equal to evaluation score in written pitches
Population -Evaluators
Sample -Those visted museum of science & industry
Hypothesis : (paired t test)
Null Hypothesis :Evaluation score by recruiters in spoken pitches is equal to evaluation score in written pitches
Alternative Hypothesis : Evaluation score by recruiters in spoken pitches is not equal to evaluation score in written pitches
Dependent variable-Evaluation score by students themselves, the external evaluators (professional/hypothetical recruiters),
Independent variable-Mode of job pitch (Video,pitch,audio pitch)
Statistics for experiment-paired t test is used with p value & t statistic used for drawing inference
Also we had samples of trained stage actors & untrained readers to read the text of participants
Overall conclusion :
1. evaluators gave better impression rating score to the candidate in case of an audio pitch rather than read the transcript
2. recruiters showed higher interest in recruiting the candidate in case of an audio pitch rather than read the transcript
3. Adding voice to transcripts, by trained staged actors or untrained adults read them, no statistical difference in results
4. Video pitches were not significantly different from audio pitches in terms of evaluations of the candidates by recruiters
5. Candidateâ€™s voice is most important for conveying intellect.
6. While booth school MBAs & MBA students did not find any statistical difference between scores by evaluators in case of speaking a pitch & writing a...
SOLUTION.PDF