b.) Find the probability that the numver that say they feel secure is more than
ID: 3353993 • Letter: B
Question
b.) Find the probability that the numver that say they feel secure is more than five
P(x>_5)=____(round to three decimal places as needed)
c.) Find the probability that the number that say they would feel secure is at most five.
P(x<_5)=____(round to three decimal places as needed)
Thirty percent of households say they would feel secure if they had $50,000 in savings. You randomly select 8 households and ask them if they would feel secure if they had $50,000 in savings Find the probability that the number that say they would feel secure is (a) exactly five, (b) more than five, and (c) at most five (a) Find the probability that the number that say they would feel secure is exactly five P(5)- (Round to three decimal places as needed.)Explanation / Answer
This is a binomial distribution with parameters:
n = 8, p = 0.30
Hence,
a) P(5)
= Binomdist(5, 8, 0.30, FALSE) [Excel Formula]
= 0.047
b) P(x > 5)
= 1 - P(x < 5)
= 1 - binomdist(5, 8, 0.30, TRUE) [Excel Formula]
= 0.011
c) P(At most 5)
= P(x < 5)
= binomdist(5, 8, 0.30, TRUE) [Excel Formula]
= 0.989
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.