Question

A health professional is investigating whether stress level before a routine practice session can be used to predict the mean stress level before a major figure skating competition. The health professional selected a random sample of 6 figure skaters and measured the stress level before a routine practice session and before a major competition. Each variable was measured as the change in the interval between heartbeats, or heart rate variability. The health professional wants to estimate the mean change in the stress level before a major competition for each unit increase in the stress level before a routine practice.

Answer 1

The health professional wants to estimate the mean change in the stress level with the help of a linear regression t-interval for slope.

What is a linear regression t-interval for slope?

The regression t-test is used to determine whether the slope, β1, of the human descent line, is equal to 0. Based on that test we can determine if x is a useful (direct) prediction of y.

A t-test is a mathematical test used to compare methods of two groups. It is often used in hypothesis tests to determine whether a procedure or treatment affects the number of people interested in it, or whether two groups are different from each other.

Thus, The health professional wants to estimate the mean change in the stress level with the help of a linear regression t-interval for slope.

Learn more about Regression slope here:

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