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A relief fund is set up to collect donations for the familiesaffected by recent storms. A random sample of 400 people shows that45 of those 200 who were contacted by telephone actually madecontributions compared to only 35 of the 200 who received firstclass mail requests.

The 95% confidence interval for the difference in the proportionsof people who make donations if contacted by telephone or firstclass mail is (round each answer to 4 places after thedecimal):

lower end =

higher end =

Is there significant statistical evidence that the percent ofpeople who were contacted by telephone and made a contribution islarger than the percent of people who received first class mailrequests and made a contribution?

This interval contains all positive numbers, indicating thatthere is sufficient evidence to conclude that the percent of peoplewho made a contribution after being contacted by telephone isgreater than the percent of people who made a contribution afterreceiving first class mail requests.

This interval contains all negative numbers, indicating thatthere is sufficient evidence to conclude that the percent of peoplewho made a contribution after receiving first class mail requestsis greater than the percent of people who made a request afterbeing contacted by telephone.  

  This interval contains zero, indicating that thereis not sufficient evidence to conclude that the percent of peoplewho made a contribution after being contacted by telephone isgreater than the percent of people who made a contribution afterreceiving first class mail requests.