Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. a pollster contacts 86 people in the 18-21 age bracket and finds that 74 of them respond and 12 refuse to respond. when 257 people in the 22-29 age bracket are contacted, 236 respond and 21 refuse to respond. suppose that one of the 343 people is randomly selected. find the probability of getting someone in the 22 dash 29 age bracket or someone who refused to respond.

Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 93 people in the 18-21 age bracket and finds that 79 of them respond and 14 refuse to respond. When 261 people in the 22-29 age bracket are contacted, 241 respond and 20 refuse to respond. Assume that 1 of the 354 people is randomly selected. Find the probability of getting someone in the 18-21 age bracket or someone who agreed to respond

Step-by-step explanation:

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

related questions