Use the Following: Assume a Significant XY Correlation of

question 46

Short Answer

Use the following: Assume a significant XY correlation of .60 and a sample size of 62. The mean of X equals 14.00, and the mean of Y equals 2.00. The estimated sd of the sample X equals 3.00 and the estimated sd of Y equals .80.
-14-88. Predict a Y value for a known X value of 10.00.

Interpret confidence intervals in the context of the studied variable (e.g., cholesterol levels, gas prices, weight loss).

Distinguish between what confidence intervals tell us about population parameters versus the samples themselves.

Understand the implications of different levels of confidence (e.g., 90%, 95%, 99%) on the width of confidence intervals.

Apply the concept of margin of error in the construction and interpretation of confidence intervals.

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