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3 years ago

What is the value of the expression below when w =7 and x = 2? 3w – 4x

Mathematics

2 answers:

guapka [62]3 years ago

8 0

Answer:

$13$

Step-by-step explanation:

$w = 7 \: \: \: \: \: \: x = 2 \\ 3w - 4x \\ 3 \times 7 - 4 \times2 \\ 21 - 8 \\ =1 3$

Dimas [21]3 years ago

6 0

Answer:

Step-by-step explanation:

Substitute the variables given

w=7 &x=2

3(7)-4(2)

21-8

=13

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Answer:

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Data given

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$\mu$ population mean (variable of interest)

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Part a: System of hypothesis

We need to conduct a hypothesis in order to determine if actual mean is different from 40 , the system of hypothesis would be:

Null hypothesis: $\mu =40$

Alternative hypothesis: $\mu \neq 40$

Part b

In th context of this tes, what is a Type I error?

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Part c

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