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Reptile [31]
3 years ago
6

An operation manager at an electronics company wants to test their amplifiers. The design engineer claims they have a mean outpu

t of 451 watts with a variance of 144. What is the probability that the mean amplifier output would be greater than 449.8 watts in a sample of 76 amplifiers if the claim is true?
Mathematics
1 answer:
tia_tia [17]3 years ago
7 0

Answer:

sorry for that i did not about that give a thanks and save water for feuter . jal

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slava [35]
Congruent
Might be wrong sorry if it is
7 0
3 years ago
Jake’s Cameras purchased a digital camera at a wholesale cost of $80. They marked up the price 50 percent above the wholesale co
Nesterboy [21]

Answer:

2 months

Step-by-step explanation:

$80 x 0.5 = $40

$80 + $40 = $120

$120 * 0.25 = $30

1st month - $120-$30 = $90

2nd month - $90-$22.5 = $67.5

3 0
4 years ago
Read 2 more answers
Work out an estimate for square root 1.13 + 2.84 x 9.33
Feliz [49]

<u>hi</u><u> </u><u>there</u><u>!</u>

<u>\large \rm =  \color{brown} 27.6272 \: \\  \tt in  \: \: alternate \:  \: form \\  \\  \large \tt \color{cyan} \frac{17267}{625} , \color{red}27 \frac{392}{625}</u>

<h2 />

Step-by-step explanation:

<u>\tt1.13 + 2.84 \times 9.33</u>

<u>multiply</u><u> the</u><u> number</u>

<u>\tt \color{green}1.13 + 26.4972</u>

<u>add </u><u>the </u><u>number</u>

<u>= \tt \color{green}27.6272 \\  \\ \tt \color{pink}or \:  \: in \:  \: alternate \:  \: form \\  \\ \tt \color{purple} \frac{17267}{625} \tt \color{blue} \: , \: 27 \frac{392}{625}</u>

<h2><u>hope </u><u>it</u><u> helps</u></h2>

<u>#</u><u>C</u><u>a</u><u>r</u><u>r</u><u>y</u><u>o</u><u>n</u><u>l</u><u>e</u><u>a</u><u>r</u><u>n</u><u>i</u><u>n</u><u>g</u>

<h2 />
6 0
3 years ago
A circle has a central angle measuring 90° that intersects an arc of length 117.75 in. What is the length of the radius of the c
notka56 [123]
<span>arc length   =   2 * radius * PI * [central angle (degrees) ÷ 360]
</span>
radius = arc length / 2 * PI * .25
radius =117.75 / .5 * PI
radius = <span> <span> <span> 74.9619781963 inches</span></span></span>
Source:
<span><span><span> </span> </span> </span> http://www.1728.org/radians.htm


7 0
3 years ago
A number increased by twelve
Anarel [89]

Answer:

X+12

Step-by-step explanation:

"Increased by" means addition.

3 0
4 years ago
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