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

=

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.

7,24

step-by-step explanation: