Based on the confidence interval, which of the following claims is supported?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Baseball statisticians studied how often triples (a certain event in a baseball game) occurred in professional games played between 1947 and 2017. A 98 percent confidence interval to estimate the slope of the linear regression line relating the year, x, and the mean number of triples per game, y, yielded (−0.006,−0.002). A check shows that the conditions necessary for inference for the slope of the regression line are met.

Based on the confidence interval, which of the following claims is supported?

 
 
  • The mean number of triples per game is between 0.002 and 0.006.

    A
  • The number of triples per game has increased, on average, per year.

    B
  • There is no linear relationship between the mean number of triples per game and year.

    C
  • There is a negative linear relationship between the mean number of triples per game and year.

    D
  • A conclusion cannot be made about the relationship between year and mean number of triples per game because the values are close to 0.

    E

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