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3 years ago

Please help will mark brainliest

Mathematics

1 answer:

babunello [35]3 years ago

8 0

The correct answer would be B

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A random sample of five Galaxy 8 smartphones is selected from the production line after final assembly, and the result of the we

zepelin [54]

<h2>Answer with explanation:</h2>

Given : A random sample of five Galaxy 8 smartphones is selected from the production line after final assembly, and the result of the weight control measurement is (in grams) are :

X= 155.1, 154.8, 155.5, 155.3, and 154.6.

here, n=5

The average weight : $\overline{x}=\dfrac{\sum^{i=5}_{i=1}x_i}{n}$

$=\dfrac{155.1+154.8+155.5+155.3+154.6}{5}\\\\=\dfrac{775.3}{5}=155.06$

∴ Average weight ( $\overline{x}$ )=155.06 grams

Uncertainty = Standard deviation: $\sigma=\sqrt{\dfrac{\sum^{i=5}_{i=1}(x_i-\overline{x})^2}{n}}$

$=\sqrt{\dfrac{(0.04)^2+(-0.26)^2+(0.44)^2+(0.24)^2+(-0.46)^2}{5}}$

$=\sqrt{\dfrac{0.532}{5}}=\sqrt{0.1064}=0.326190128606\approx0.33$

i.e. Its uncertainty : $\sigma=0.33$

The fractional uncertainty = $\dfrac{\sigma}{\overline{x}}$

$=\dfrac{0.33}{155.06}=0.00212820843544\approx0.002$

7 0

4 years ago

Directions: (a) Identify the parent function and (b) describe the transformations.

Zepler [3.9K]

Parent function: y=2^x
Transformations:
Reflection over x-axis
Vertical stretch of 3
Right 1
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3 years ago

Solve -37+n=-56 for n

azamat

Answer:

n=-19

Step-by-step explanation:

-37+n=-56

-37+37+n=-56+37

n=-19

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2 years ago

F(x)=x² – 9- indenify zeros of the function

noname [10]

Answer:3,-3

Step-by-step explanation:

difference of 2 squares

(x+3)(x-3)

x+3=0

x-3=0

x=3,-3

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4 years ago

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wolverine [178]

The answer is the question of the answer is the question of whether the question is tow

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3 years ago