Answer:
y=4x-13
Step-by-step explanation:
used demos
Π, √10, 3.5
3.14, 3.16, 3.5
Answer:
Step-by-step explanation:
So I'm assuming you meant to type f(t) = 1000(1.03)^t
and assuming t is in years, we let t = 0.25, therefore 1000(1.03)^0.25
= 1.00741707178, then subtracting 1000 (assuming that is the original money), we get approx = 0.007 of whatever currency
Answer:
545 randomly selected air passengers must be surveyed.
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 zscore that has a pvalue of
.
The margin of error is:

95% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
Assume that you want to be 95% confident that the sample percentage is within 4.2 percentage points of the true population percentage.
We dont know the true proportion, so we use
, which is when the largest sample size will be needed. We have to find n for which
. So






Rouding up
545 randomly selected air passengers must be surveyed.