In a Study of Gender-Typing of Toys, Parents and Non-Parents

question 30

Essay

In a study of gender-typing of toys, parents and non-parents were asked to rate the gender appropriateness of toys on a scale of 1 (Definitely for girls) to 5 (Definitely for boys). The investigators did a regression analysis of the parents mean scores vs. the non-parents mean scores for each toy. A computer-generated normal probability plot of the residuals is shown below.
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Write a brief paragraph describing the plot. Based on your description recommend to the investigators whether or not the appropriate assumption is met for simple linear regression.

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Definitions:

Top Speed

The maximum velocity that an object or entity can reach under specific conditions.

Normal Distributions

A probability distribution that displays symmetry around the mean, indicating data closer to the mean occurrence more frequently than data far from the mean.

Mean Commercial Time

The average duration of commercials or advertisements played during a television program or on a digital platform.

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the true population parameter with a certain level of confidence.