Among 41- to 46-year-olds, 31% say they have used a computerused a computer while under the influence of alcoholalcohol. Suppose six 41- to 46-year-olds are selected at random. a) The probability that at least one of the six randomly selected adults has not written an editorial letter while under the influence of peer pressure.
Correct answer = 1 - (28)^6 = 0.999518
(b) The probability that at least one of the six randomly selected adults has written an editorial letter while under the influence of peer pressure.
This is the example that I am having issues with. The answer given is = 0.8607. No matter how I've done the math, I cannot come to 0.8607. Details would be appreciated.

i think this could be a possible answer (1 / 84) -1

good luck! : d

answer

false

explanation

these practices describe the manner the land use outcome is attained. land management methods implemented by corporations are a mandatory because they are a driver for better land use results economically, socially and environmentally. corporations are required to understand the connection between land use , and land management practices to support sustainable land use policies

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺