The mean height of male adults in Ohio is 69.1 inches. We want to know whether this is different from the national average height for male adults (according to the CDC). A) Identify the dependent (DV) variable
B) Identify the levels of the independent variable (IV)
- In these specific problems, these are two groups of people:
(A = sample vs. B = population or norm/data based on a population)
C) Indicate whether the researcher’s hypothesis is directional or non-directional
- Directional: A is (higher/lower) than B
- Non – directional: A is different from B
D) Write the null and research hypotheses (H0 and H1) in your own words

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

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