Examine the function f(x)=x+(3/x). Find the point on the curve at which the tangent lines pass through the point (1, 1).
1 answer:
You might be interested in
Answer:
6546 students would need to be sampled.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the z-score that has a p-value of .
The margin of error is:
The dean randomly selects 200 students and finds that 118 of them are receiving financial aid.
This means that
90% confidence level
So , z is the value of Z that has a p-value of
, so
.
If the dean wanted to estimate the proportion of all students receiving financial aid to within 1% with 90% reliability, how many students would need to be sampled?
n students would need to be sampled, and n is found when M = 0.01. So
Rounding up:
6546 students would need to be sampled.
Let's call the store value as s and the wholesale price as w. A store prices tapes by raising the wholesale price 50%(0.5 in decimals) and adding 25 cents, writing this as an equation, we have
If we invert the equation we're going to find the the wholesale price as a function of the store price.
Now, to find the wholesale price if the sales price is $1.99, we just need to evaluate s = 1.99 on the function we created.
The wholesale price is $1.16.