Question: The null hypothesis 0 : 0 = 0 H 0 : 0 =0 tests whether the intercept of the regression line is zero. This means

The null hypothesis 0 : 0 = 0 H 0 : 0 =0 tests whether the intercept of the regression line is zero. This means testing whether the mean firmness reading is zero when the pectin concentration is zero. If 0 H 0 is true, it implies that the intercept is not significantly different from zero, indicating that the starting firmness without any pectin could be considered as zero

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