The Water Department checks the city water supply on a regular basis for contaminants such as trihalomethanes (THMs). The Water Department takes 200 samples and estimates that the concentration of THMs in your drinking water is 3 ppb (parts per billion), with a standard deviation of 0.3 ppb. Assuming the samples were random and unbiased how much confidencr can you have in this data? A. 95% confident the average concentration of PCBs in the water supply is between 2.4 ppb and 3.6 ppb. B. 68% confident the average concentration of PCBs in the water supply is between 2.9 ppb and 3.1 ppb ...
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The Water Department checks the city water supply on a regular basis for contaminants such as trihalomethanes (THMs). The Water Department ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What is the value of y in the equation 4 (5y - 8 - 2) = 185 - 15?
Answers (1)
14 is 65% of what number?
Answers (1)
30000*300+20000-28888:14
Answers (2)
A base of a triangle measures 32 centimeters what is the measure of the corresponding midsegment of the triangle
Answers (1)
Can a five year old do Algebra? yes but how and why? what are yall thoughts give me at least ten sentences on it
Answers (2)
New Questions in Mathematics
Is 2.22 a irrational or a rational number
Answers (1)
Find the output, y, when the input, x, is 30. y = 14 - 0.5x
Answers (1)
Let's say that you want to paint a room in your house. The room has rectangular walls. Each wall is 8 feet high. Two of the walls are 15 feet long, and the other two walls are 12 feet long.
Answers (1)
Thirty students volunteered to set up booths for the school fair. All of the students worked 2 hours after school on Thursday and on Friday. Twelve of them also worked 3 hours on Wednesday.
Answers (1)
What is the slope of the equation y = 3/4x + 8? A. 3/4 B. 8 C. 3 D. 4
Answers (1)