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Schach [20]
3 years ago
13

Solve. –40 = 5x please help asap thanks

Mathematics
1 answer:
Aleksandr [31]3 years ago
4 0

Answer:

x = -8

Step-by-step explanation:

<h2><u>If a variable is next to a number, that means whatever the variable is, you multiply it by the number.</u></h2>

<u></u>

<u>We divide to get our final answer:</u>

-40 / 5

==> - 8

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Answer:

\text{Average diameter is 1.65 mm and we decide that it is not 1.65 mm.}                

Step-by-step explanation:

We are given the following in the question:

The needle size should not be too big and too small.

The diameter of the needle should be 1.65 mm.

We design the null and the alternate hypothesis

H_{0}: \mu = 1.65\text{ mm}\\H_A: \mu \neq 1.65\text{ mm}

Sample size, n = 35

Sample mean, \bar{x} = 1.64 mm

Sample standard deviation, s = 0.07 mm

Type I error:

  • It is the error of rejecting the null hypothesis when it is true.
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Thus, type I error in this study would mean we reject the null hypothesis that the average diameter is 1.65 mm but actually the average diameters of the needle is 1.65 mm.

Thus, average diameter is 1.65 mm and we decide that it is not 1.65 mm.

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