# Question

(a) What is a sampling distribution of means?

(b) When is it used?

(c) Why is it useful?

(b) When is it used?

(c) Why is it useful?

## Answer to relevant Questions

(a) What three things does the central limit theorem tell us about the sampling distribution of means? (b) Why is the central limit theorem so useful? For each of the following, indicate whether it is a positive linear, negative linear, or nonlinear relationship: (a) Quality of performance (Y) increases with increased arousal (X) up to an optimal level; then quality of ...In the following data, the X scores reflect participants’ rankings in a freshman class, and the Y scores reflect their rankings in a sophomore class. To what extent do these data form a linear relationship? As the value of r approaches ±1, what does it indicate about the following? (a) The consistency in the X-Y pairs; (b) The variability of the Y scores at each X; (c) The closeness of Y scores to the regression line; (d) The ...You measure how much people are initially attracted to a person of the opposite sex and how anxious they become during their first date. For the following ratio data, answer the questions below. (a) Compute the statistic ...Post your question

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