You have a normal distribution of hours per week that music students practice. The mean of the values is 8 and the standard deviation of the values is 4.
According to the normal distribution model that corresponds to this population, what percentage of the students
practice between 6 to 10 hours per week?
Use the graph of the standard normal distribution given below to find the percentage.
Standard Normal
Distribution
"Bell Curve
onnen 10 SOUND
3-2.5 -2 -15 +1 -0.50 -0.5 +1 +1.5 -2.25 -3
2019
38%
34%
19%
303

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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4x and 6y

im not sure though

da freeck kinda math is this just drop out

step-by-step explanation: