Henry and Bailey plan to make key chains. They need foot of string and 5 beads for each key chain. Henry has $8 to buy string, a
1 answer:
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So. the smaller hose, can fill the pool in 8hrs
in 1hr then, it really has done only 1/8 of the job
if we take the filled pool to be the total job time, or "t"
then the smaller hose in 1hr has only done only 1/8 in "t" amount or
now, the bigger hose, can do the filling in 6hrs
that means in 1hr, it has only done then 1/6 in "t" time or
now, the whole job, is a whole, or 1
so.. let us add those rates of each hose together, to see how long they'd take
solve for "t"
in 1hr then, it really has done only 1/8 of the job
if we take the filled pool to be the total job time, or "t"
then the smaller hose in 1hr has only done only 1/8 in "t" amount or
now, the bigger hose, can do the filling in 6hrs
that means in 1hr, it has only done then 1/6 in "t" time or
now, the whole job, is a whole, or 1
so.. let us add those rates of each hose together, to see how long they'd take
solve for "t"
Answer:
The confidence interval for the difference of proportions of the population p2003-p2008 is .
Step-by-step explanation:
In this question we have to construct a 90% confidence interval (CI) for a difference of proportions.
The proportion for 2003 is .
The proportion for 2008 is .
The difference in proportions is .
The standard deviation of the difference of proportions can be estimated as:
For a 90% CI, the z-value is 1.64.
Then we can construct the CI as