Joanna, a machine learning engineer is studying what programming languages are the most effective to help systems learn from data. Based on previous research, more than 50% of machine learning involves the use of Python, a programming language. She suspects this percent has increased in recent years. In the process of hypothesis testing, what set value will allow Joanna to make a conclusion about whether her sample proportion is "different enough" than the claimed population proportion?a. p-value b. test statisticc. significance leveld. null hypothesis

Option A

Step-by-step explanation:

The p-value will help Joanna in coming to a conclusion about her hypothesis. The p-value derived from the test statistics calculated gives an immediate accurate summary of inference information (using significance levels, confidence intervals etc) for the parameter of interest.

It is used as an alternative to rejection points; a smaller p value means there is stronger evidence leading to the rejection of the null hypothesis and vice versa.

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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