Contaminated water: In a sample of 43 water specimens taken from a construction site, 23 contained detectable levels of lead. (a) Construct a 99% confidence interval for the proportion of water specimens that contain detectable levels of lead. Round the answer to at least three decimal places.
(b) Construct a 95% confidence interval for the proportion of water specimens that contain detectable levels of lead. Round the answer to at least three decimal places. A 95% confidence interval for the proportion of water specimens that contain detectable levels of lead is

c is the answer

step-by-step explanation:

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

it is definatly the 3rd one. very much looks like it, for a good chance, the third one would be best for you.

8(4)^8=72^feet to say that the total can conclude to 8(4) which as you know would mean 8 x 4. that equals 32w. 32^ could make a 72 answer as well. but your coefficent will remain w so your answer is 72w.

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