A given country's Embassy in the United States has hired a public relations firm to promote the image of the country's government in the U.S.The public relations firm begins its campaign by establishing that only 5% of the U.S. public has a favorable impression of the government.The public relations firm then spends a year promoting the image of the government.The firm then randomly surveys 300 U.S. citizens and finds that 18 have a favorable impression of the government.At 7% level of significance, the conclusion is:

a.

that there is sufficient evidence to conclude that the campaign has been effective.

b.

that there is sufficient evidence to conclude that the campaign has been effective when in fact such evidence may not exist.

c.

that there is no evidence to conclude that the campaign has been effective when in fact such evidence may exist.

d.

that there is no evidence to conclude that the campaign has been effective.

e.

that more information is needed to analyze this problem.