Answer:
$14.98
Step-by-step explanation:
Answer:

Step-by-step explanation:
we are given

Let's assume angle as theta

so, we get

now, we can use unit circle and find theta
and we get

So, solution is

Answer:
Correct
Step-by-step explanation: took it on an assignment and got it correct
Answer: 271
Step-by-step explanation:
As per given description in the question, we have
Critical value for 90% confidence interval =
[using z-value calculator ]
Margin of error : E= 0.05
Since prior estimate of population proportion is unknown so we take p= 0.5
Formula we use to find the sample size :
[we assume p= 0.50]
i.e. 
Simplify :
Therefore , the minimum sample size required = 271
The 9 is in the tenths place.