Solution Found!
Solved: According to a study conducted by CESI Debt
Chapter 11, Problem 7CT(choose chapter or problem)
Problem 7CT
According to a study conducted by CESI Debt Solutions, 80% of married people hide purchases from their mates. In a random sample of 20 married people, find and interpret:
(a) The probability exactly 15 hide purchases from their mates.
(b) The probability at least 19 hide purchases from their mates.
(c) The probability fewer than 19 hide purchases from their mates.
(d) The probability between 15 and 17, inclusive, hide purchases from their mates.
Questions & Answers
QUESTION:
Problem 7CT
According to a study conducted by CESI Debt Solutions, 80% of married people hide purchases from their mates. In a random sample of 20 married people, find and interpret:
(a) The probability exactly 15 hide purchases from their mates.
(b) The probability at least 19 hide purchases from their mates.
(c) The probability fewer than 19 hide purchases from their mates.
(d) The probability between 15 and 17, inclusive, hide purchases from their mates.
ANSWER:
Answer :
Step 1 : According to a study conducted by CESI Debt Solutions, 80% of married people hide purchases from their mates. In a random sample of 20 married people.
Here, x = number of married people hide purchases from their mates.
X binomial distribution with parameters n and p.