Apoll conducted in 2013 found that 52% of u. s. adult twitter users get at least some news on twitter.40. the standard error for this estimate was 2.4%, and a normal distribution may be used to model the sample proportion. construct a 99% confidence interval for the fraction of u. s. adult twitter users who get some news on twitter, and interpret the confidence interval in context.

 (0.458,0.582)

Step-by-step explanation:

Given : Sample size :

The proportion of U.S. adult Twitter users get at least some news on Twitter. :

Standard error :

Significance level :

Critical value :

The confidence interval for population proportion is given by :-

Hence, the 99% confidence interval for the fraction of U.S. adult Twitter users who get some news on Twitter, and interpret the confidence interval in context= (0.458,0.582)

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

nothjing

step-by-step explanation: