Please answer questions in complete sentences!

A testing lab wishes to test two experimental brans of outdoor pain long each wiil last befor fading . The testing lab makes six

Simora [160]

Answer:

The answer is " $\bold{Brand \ A \ (35, 350, 18.7) \ \ Brand \ B \ (35, 50, 7.07)}$ "

Explanation:

Calculating the mean for brand A:

$\to \bar{X_{A}}=\frac{10+60+50+30+40+20}{6} =\frac{210}{6}=35$

Calculating the Variance for brand A:

$\sigma_{A}^{2}=\frac{\left ( 10-35 \right )^{2}+\left ( 60-35 \right )^{2}+\left ( 50-35 \right )^{2}+\left ( 30-35 \right )^{2}+\left ( 40-35 \right )^{2}+\left ( 20-35 \right )^{2}}{5} \\\\$

$=\frac{\left ( -25 \right )^{2}+\left ( 25 \right )^{2}+\left ( 15\right )^{2}+\left ( -5 \right )^{2}+\left ( 5 \right )^{2}+\left ( 15 \right )^{2}}{5} \\\\ =\frac{625+ 625+225+25+25+225}{5} \\\\ =\frac{1750}{50}\\\\=350$

Calculating the Standard deviation:

$\sigma _{A}=\sqrt{\sigma _{A}^{2}}=18.7$

Calculating the Mean for brand B:

$\bar{X_{B}}=\frac{35+45+30+35+40+25}{6}=\frac{210}{6}=35$

Calculating the Variance for brand B:

$\sigma_{B} ^{2}=\frac{\left ( 35-35 \right )^{2}+\left ( 45-35 \right )^{2}+\left ( 30-35 \right )^{2}+\left ( 35-35 \right )^{2}+\left ( 40-35 \right )^{2}+\left ( 25-35 \right )^{2}}{5}$

$=\frac{\left ( 0 \right )^{2}+\left ( 10 \right )^{2}+\left ( -5 \right )^{2}+\left (0 \right )^{2}+\left ( 5 \right )^{2}+\left ( -10 \right )^{2}}{5}\\\\=\frac{0+100+25+0+25+100}{5}\\\\=\frac{100+25+25+100}{5}\\\\=\frac{250}{5}\\\\=50$

Calculating the Standard deviation:

$\sigma _{B}=\sqrt{\sigma _{B}^{2}}=7.07$

4 0

3 years ago

PLEASE HELP ILL GIVE POINTD AND BRAINLIEST

Nastasia [14]

Answer:

I would have to say C.

Explanation:

Feel free to correct me if i'm wrong :)

Hope this helps

4 0

3 years ago

What is an algorithm?

hichkok12 [17]

D. Both A and C. In my opinion though...

8 0

3 years ago

In Microsoft Word, when you highlight existing text you want to replace, you are in

Lina20 [59]

The correct answer is C. Typeover mode

This is when you select a text and can then type over it and it automatically replaces it with what you're writing. It also creates a little box that lets you edit the selected part easily if that's what you need with things like bold or italic or change the text color.

4 0

3 years ago

"The first published news of the massive electronic data collection by the National Security Agency came from what British newsp

aksik [14]

Answer:

The Guardian

Explanation:

PRISM is a code name for a program under which the US National security Agency collects internet communications from various US Internet companies.

PRISM was publicly revealed when classified documents about the program were leaked to journalists of The Washington Post and The Guardian by Edward Snowden (as a NSA contractor) during a visit to Hong Kong . The leaked documents included 41 power point slides , four of which are published in news article.

Snowdown's subsequent disclosures included statement that government agencies such as the UK's GCHQ also undertook mass interception and tracking of internet and communication data.

3 0

3 years ago

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