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Simora [160]
2 years ago
14

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

t of 331331 watts with a variance of 144144. What is the probability that the mean amplifier output would be greater than 332.8332.8 watts in a sample of 4949 amplifiers if the claim is true
Mathematics
1 answer:
Zarrin [17]2 years ago
7 0

Answer: brother

Step-by-step explanation:

You might be interested in
There are 205 coins in a jar all of which are either nickles or quarters . The vaule of the coin in the jar is $31.85. if both o
Gnesinka [82]

Answer: There are 97 nickels and 108 quarters.

Step-by-step explanation:

Let x = Number of nickels, y = Number of quarters.

As per given,

x+y = 205    ...(i)

0.05x+0.25y = 31.85 ... (ii)    [1 nickel = $0.05, 1 quarter = $ 0.25]

Multiply (ii) by 20, we get

x+5y=637   ...(iii)

Eliminate (i) from (iii)

4y = 432

⇒ y = 108 [Divide both sides by 4]

Put value of y in (i), we get

108+x=205\Rightarrow\ x= 97

Hence, there are 97 nickels and 108 quarters.

6 0
3 years ago
According to cbs money watch, the average monthly household cellular phone bill is $100. suppose monthly household cell phone bi
iren2701 [21]
<span>The probability that a randomly selected monthly cell phone bill is more than $127 is given by

P(X\ \textgreater \ 127)=1-P(X\ \textless \ 127) \\  \\ =1-P\left(z\ \textless \  \frac{127-100}{11.35} \right)=1-P(z\ \textless \ 2.38) \\  \\ =1-0.99132=0.00868</span>
5 0
3 years ago
Which of the following sets of numbers could not represent the three sides of a triangle?
Zanzabum

Answer:

The last one..Number 4

Step-by-step explanation:

When u add the two sides it's supposed to be larger than the bigger side

so 13+20 is smaller than 34

4 0
2 years ago
Which linear Function has the greatest Y intercept
Svetlanka [38]

Answer:

:pog_champ:

Step-by-step explanation:

7 0
3 years ago
I got the answer it is A I just need you to check it pls thank you
andrey2020 [161]

We have a circle of radius 5 m inside a square of side 10 m. The shaded area is:

A_{\text{Shaded}}=A_{\text{Square}}-A_{\text{Circle}}

Now, we calculate the area of the square and the circle:

\begin{gathered} A_{\text{Square}}=10^2=100m^2 \\ A_{\text{Circle}}=\pi\cdot5^2=25\pi m^2 \end{gathered}

Finally, the shaded area is:

A_{\text{Shaded}}=100-25\pi\approx21.5m^2

3 0
1 year ago
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