5.
California and Washington state both started reporting COVID-19cases at approximately the same time. Suppose a researcher wants tostudy the fatality rate of diagnosed COVID-19 cases in the 2states.
a. What null hypothesis should be used? Pick one andexplain.
i. California has a higher fatality rate than Washington.
ii. California has lower higher fatality rate thanWashington.
iii. California has a different fatality (possibly higher, possiblylower) rate than Washington. iv. California and Washington have thesame fatality rate.
b. What alternate hypothesis should be used? Pick one andexplain.
i. California has a higher fatality rate than Washington.
ii. California has lower higher fatality rate thanWashington.
iii. California has a different fatality (possibly higher, possiblylower) rate than Washington. iv. California and Washington have thesame fatality rate.
c. As of 3/24/2020, California had 2220 cases and 100fatalities, compared to 111 fatalities in 2221 cases in Washington.Use your calculator to carry out a suitable hypothesis test. Reportthe p-value of the test, determine whether or not to reject thenull, and state what should be concluded. Use ? = .05.
