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).
Answer:
B
Step-by-step explanation:
sjsjsjsjsjjsjsjsjdjdjjdjdjs
1b.regular polygon
2b.regular octagon
& in the bottom is ....
3a.rectangle
3b.trapezoid
3c.square
Answer:
Angle 6 is 42 degrees
Angle Q is 56 degrees
Angle is 74 degrees
Let me know if this helps :)