According to a survey, 22% of residents of a country 25 years old or older had e

Question

According to a survey, 22% of residents of a country 25 years old or older had earned at least a bachelor's degree. You are performing a study and would like at least 10 people in the study to have earned at least a bachelor's degree. When technology is used, use the Tech Help button for further assistance. (a) How many residents of the country 25 years old or older do you expect to randomly select? (b) How many residents of the country 25 years old or older do you have to randomly select to have a probability 0.89 that the sample contains at least 10 who have earned at least a bachelor's degree? (a) The number of randomly selected residents is _____ (Round up to the nearest integer.)

Explanation / Answer

Solution:-
a) 10/0.22 = 45.4545
= 46 residents

mean = 46*0.22 = 10.12

The number of randomly selected residents is 46

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.