15 question



56% of us adults have very little confidence in newspapers. you randomly select 10 us adults. find the probability that the number of us adults who have very little confidence in newspapers is (a) exactly five, (b) at

least six, and (c) less than four

(a) p(5)=

(round to three decimal places as needed)

0.229, 0.530, 0.091

Step-by-step explanation:

given that 56% of US adults have very little confidence in newspapers.

You randomly select 10 US adults.

X, the no of US adults in the sample of 10 adults who have very little confidence in newspapers is

Binomial since there are only two outcomes and each adult is independent of the other

X is bin (10, 0.56)

a) P(X=5) =0.229

b) =0.530

c)

*face palms*

step-by-step explanation:

no

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.