Question 5 (5 points) The U.S. Centers for Disease Control and Prevention (CDC) and the American Dental Association (ADA) have recommended a range of fluoride concentrations in drinking water to prevent tooth decay while minimizing the risk of dental fluorosis. Local municipalities are responsible for monitoring and adjusting the level of fluoride in accordance with CDC guidelines. These guidelines specify the ideal range to be 0.950.25 mg/L. Recently, the Village of Mayzieville has been challenged by a group of Georgia Southern students concerned that there is too much fluoride in the drinking water. They took 30 samples of drinking water from various homes and found the average fluoride concentration to be 1.5 mg/L with a standard deviation of 0.4. If the NORMDIST(Z) = .23405, what can you conclude based on this sample? O Around 23.4% of Mayzieville's drinking water exceeds the acceptable CDC limit for fluoride concentration. The fluoride concentration in Mayzieville's drinking water is exactly at the CDC's recommended upper limit. Approximately 23.4% of Mayzieville's drinking water is below the acceptable CDC limit for fluoride concentration. Mayzieville's drinking water complies precisely with the CDC's guidelines for fluoride concentration. The majority of Mayzieville's drinking water falls within the acceptable CDC limit for fluoride concentration.

Question 5 ( 5 points) The U.S. Centers for Disease Control and Prevention (CDC) and the American Dental Association (ADA) have recommended a range of fluoride concentrations in drinking water to prevent tooth decay while minimizing the risk of dental fluorosis. Local municipalities are responsible for monitoring and adjusting the level of fluoride in accordance with CDC guidelines. These guidelines specify the ideal range to be 0.950.25mg/L. Recently, the Village of Mayzieville has been challenged by a group of Georgia Southern students concerned that there is too much fluoride in the drinking water. They took 30 samples of drinking water from various homes and found the average fluoride concentration to be 1.5mg/L with a standard deviation of 0.4 . If the NORMDIST(Z)=.23405, what can you conclude based on this sample? Around 23.4% of Mayzieville's drinking water exceeds the acceptable CDC limit for fluoride concentration. The fluoride concentration in Mayzieville's drinking water is exactly at the CDC's recommended upper limit. Approximately 23.4% of Mayzieville's drinking water is below the acceptable CDC limit for fluoride concentration. Mayzieville's drinking water complies precisely with the CDC's guidelines for fluoride concentration. The majority of Mayzieville's drinking water falls within the acceptable CDC limit for fluoride concentration