According to a recent census, 15% of the people in the United States are of Hispanic origin. One county supervisor believes her county has a different proportion of Hispanic people than the nation as a whole. She looks at their most recent survey data, which was a random sample of 432 county residents, and found that 49 of those surveyed are of Hispanic origin. Complete parts (a) through (d) below. a) State the hypotheses. (The proportion of people in the county that are of Hispanic origin is denoted by p.) a.) A. H0:p Calculate the test statistic. Z: According to a recent census, 15% of the people in the United States are of Hispanic origin. One county supervisor believes her county has a different proportion of Hispanic people than the nation as a whole. She looks at their most recent survey data, which was a random sample of 432 county residents, and found that 49 of those surveyed are of Hispanic origin. Complete parts (a) through (d) below. Calculate the test statistic. z = (Round to two decimal places as needed.) Calculate the Pvalue. Pvalue = (Round to three decimal places as needed.) d) State the conclusion. Because the P-value is so low, there is evidence that the Hispanic population in this county differs from that of the nation as a whole. Because the P-value is so high, there is not sufficient evidence that the Hispanic population in this county differs from that of the nation as a whole Because the P-value is so low, there is not sufficient evidence that the Hispanic population in this county differs from that of the nation as was Because the P-value is so high, there is evidence that the Hispanic population in this county differs from that of the nation as a whole