Question

A recent study was conducted to determine the concentration of lead in drinking water across various states. 25 water samples from the state of Washington were tested; the mean lead concentration was found to be 0.15%. This compares to 32 water samples in the state of Minnesota where the mean was reported to be 0.21%. The data was calculated to be significant at the 0.0001 level. Determine the meaning of this significance level.

Answer 1

Answer: At the 0.0001 level of significance, the concentration of lead is higher in water from Minnesota

Step-by-step explanation: The results of the study are significant at the 0.0001 level. This means that the probability of the outcome being the result of chance is 0.0001 or less. Because of this we can be fairly confident but not certain that the concentration of lead is higher and drinking water from Minnesota.

Answer 2

When is at a significance level of 0.0001, the concentration of lead is above in water from Minnesota.

Explanation:

The Significance level is the calculation or estimation of the strength of proof that must be seen in a sample, before the hypothesis will be rejected and concluded that the result is statistically true or correct.

In this case, when a data is calculated to be significant at 0.0001 from a recent duty, what the significance level implies in this case is that, at a level of 0.001, the concentration of lead is above or higher in water from Minnesota.