Question

15 Question Help 47% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers is (a) exactly five, (b) at least six, and (c) less than four (a) P(5)=L(Round to three decimal places as needed.) (b) P(x26) = (Round to three decimal places as needed.) (c) P(x<4)= (Round to three decimal places as needed.) Enter your answer in each of the answer boxes. Bookmarks (0) on Adobe Creative Cloud color

Answer 1

Solution :

A binomial with ,

n = 10

p = 0.47

(a)

P(5) = = BINOM.DIST(5,10,0.47,FALSE) = 0.242

(b)

P(X $\geq$ 6) =

= 1 - BINOM.DIST(5,10,0.47,TRUE)

= 0.306

(c)

P(X < 4) = = BINOM.DIST(3,10,0.47,TRUE) = 0.226