Goodness-of-Fit Test · Exercise 8

The cumulative number of COVID-19 related cases reported for Santa Clara County for a certain time period is broken down by ethnicity as in.
$$\begin{array}{cc}\text{Ethnicity}& \text{Number of cases}\\ \text{White}& \text{2,229}\\ \text{Hispanic/Latino}& \text{1,157}\\ \text{Black/African-American}& \text{457}\\ \text{Asian, Pacific Islander}& \text{232}\\ & \text{Total = 4,075}\end{array}$$

The percentage of each ethnic group in Santa Clara County is as in.
\begin{array}{|c|c|c|}\hline \text{Ethnicity} & \text{Percentage of total county population} & \text{Number expected (round to two decimal places)} \\ \hline \text{White} & \text{42.9%} & \text{1748.18} \\ \hline \text{Hispanic/Latino} & \text{26.7%} & \\ \hline \text{Black/African-American} & \text{2.6%} & \\ \hline \text{Asian, Pacific Islander} & \text{27.8%} & \\ \hline & \text{Total = 100%} & \\ \hline\end{array}

If the ethnicities of COVID-19 related cases 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 COVID-19 cases follows the ethnicities of the general population of Santa Clara County.

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Introductory Business Statistics 2e · §11.3 Goodness-of-Fit Test · Exercise 8