Answer:
(0.4958, 0.7422)
Step-by-step explanation:
Let p be the true proportion of water specimens that contain detectable levels of lead. The point estimate for p is . The estimated standard deviation is given by . Because we have a large sample, the 90% confidence interval for p is given by where is the value that satisfies that above this and under the standard normal density there is an area of 0.05. So, the confidence interval is , i.e., (0.4958, 0.7422).
Sum of all angles in a 62 sided polygon = 10800°. (Mark me as brainliest pls!)
Answer:
The Answer is y=-4x
Step-by-step explanation:
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Answer:
7w=8(2+x)
Step-by-step explanation:
2^x * 2 = 15
2^x= 15/2
2^x = 7,5
x = log 2 (7,5)