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5. California and Washington state both started reporting COVID-19 cases at approximately the same time. Suppose a...

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Statistics

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.

Answer & Explanation Solved by verified expert
3.9 Ratings (506 Votes)
Ans 5 a the null hypothesis should be used isiv California and Washington have the same fatality ratebecasue the claim is that California and Washington state bothstarted reporting COVID19 cases at approximately the same    See Answer
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