In a survey of 2230 u. s. adults, 1272 think that air travel is much more reliable than taking cruises. construct a 95% confidence interval for the population proportion of u. s. adults who think that air travel is much more reliable than taking cruises.

(0.5499, 0.5909)

Step-by-step explanation:

Given that in a survey of  2230 U.S. adults, 1272 think that air travel is much more reliable than taking cruises.

Sample proportion p =

Standard error of proportion

We can use z critical value as sample size is very large

For 95% z critical is 1.96

Margin of error = 1.96*(0.0104)

= 0.02055

Confidence interval = p-margin of error, p + margin of error

=

- 1.613 = -1.6 or -1.61

-1.522 = -1.5 or -1.52

0.587 = 0.6 or 0.59

3.079 = 3.1 or 3.08

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.