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:
1. The correct answer is graph b
2. the correct answer is t>100
Step-by-step explanation:
Answer:
Sis what???
Step-by-step explanation:
period pooh
Answer:
1000 and 9000 and 40
Step-by-step explanation:
Sharon runs a screen-printing business.to print t-shirt each day,it costs her $200 in labor plus $5 per t-shirt for materials.her income is $15 for each t-shirt she sells.how many t-shirts does sharon need to
Sell each day in order for her coast to equal her income for that day?