Environmental Protection Agency standards require that the amount of lead in drinking water be less than 15 micrograms per liter.Twelve samples of water from a local source have the following concentrations, in units of micrograms per liter:

12.214.611.514.616.59.012.79.913.315.28.715.6

Conduct a hypothesis test at the 1% level of significance to determine whether you can conclude that the mean concentration of lead is less than 15 micrograms per liter.

Q1 What is the corresponding p-value of the test statistic?Round answer to 3 decimal places

Question 50 options:choose 1

0.007

0.307

0.015

-0.007

Q2 What is the conclusion when you compare the p-value and the level of significance (alpha)?

Question 51 options:choose 1

Reject the null hypothesis

Fail to reject the null hypothesis

Q3 What is the conclusion based on the original claim?

Question 52 options:choose 1 explain

At the 0.01 level of significance, the mean concentration of lead in drinking water is less than 15 micrograms.

At the 0.01 level of significance, the mean concentration of lead in drinking water is not less than 15 micrograms