Fifteen percent of australians smoke. by introducing tough laws banning brand labels on cigarette packages, australia hopes to reduce the percentage of people smoking to 10% by 2018 (reuters website, october 23,2012). answer the following questions based on a sample of 240 australians.

a，show the sampling distribution of, the proportion of australians who are smokers.

b，what is the probability the sample proportion will be within ±0.04 of the population proportion?

c，what is the probability the sample proportion will be within ±0.02 of the population proportion?

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

тнєу єα¢н яαи 32 мιℓєѕ

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт тσ∂α!

middle maybe?

step-by-step explanation: