10.4 Exercise 22

Use the following information to answer the next two exercises. Some individuals who were exposed to the COVID-19 virus experienced a loss of taste. In a sample of COVID patients during 2022, there were 629 reported cases of loss of taste out of a total of 1,021 reported cases. In 2021, there were 486 reported cases of loss of taste out of a sample of 712 cases. Is the 2022 proportion of loss of taste more than the 2021 proportion? Using a 1% level of significance, conduct an appropriate hypothesis test.

1. “2022” subscript: 2022 group.
2. “2021” subscript: 2021 group

An appropriate null hypothesis is:

1. $p 2022 \leq p 2021$
2. $p 2022 \geq p 2021$
3. $\mu 2022 \leq \mu 2021$
4. $p 2022 > p 2021$