Chapter 11, Problem 14P

Use the following information to answer the next nine exercises: The following data are real. The cumulative number of

AIDS cases reported for Santa Clara County is broken down by ethnicity as in Table 11.29.

Ethnicity	Number of Cases
White	2,229
Hispanic	1,157
Black/African-American	457
Asian, Pacific Islander	232
	Total = 4075

The percentage of each ethnic group in Santa Clara County is as in Table 11.30.

Ethnicity	Percentage of total county population	Number expected (round to two decimal places)
White	42.9%	1748.18
Hispanic	26.7%
Black/African-American	2.6%
Asian, Pacific Islander	27.8%
	Total=100%

If the ethnicities of AIDS victims followed the ethnicities of the total county population, fill in the expected number of

cases per ethnic group.

Perform a goodness-of-fit test to determine whether the occurrence of AIDS cases follows the ethnicities of the general

population of Santa Clara County