How many of the ten questions listed below involve confidence interval for a population proportion?

1.How many hours does a full-time undergraduate the student spend working at a job, per week, on average?

2.Does a full-time undergraduate the student spend an average of more than 15 hours working at a job per week?

3.Does the percentage of full-time undergraduate students who were bom in California differ from 75%?

4.What proportion of full-time undergraduate students were born in California?

5.What proportion of people with a driver's license in California have indicated a willingness to be an organ donor?

6.Have less than two-thirds of all people with a driver's license in Washington indicated a willingness to be an organ donor?

7.What is the price of an average transaction at Pizza in the restaurant on campus?

8.What proportion of transactions at Pizza in the restaurant on campus include a soft drink?

9.Do most transactions at Pizza in the restaurant on campus include a soft drink?

10.Do weekday the staff employees take sick days disproportionately often on Mondays and Fridays?