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olya-2409 [2.1K]
3 years ago
6

The mean output of a certain type of amplifier is 129 watts with a standard deviation of 11 watts. If 70 amplifiers are sampled,

what is the probability that the mean of the sample would differ from the population mean by more than 0.6 watts? Round your answer to four decimal places.
Mathematics
1 answer:
Nadusha1986 [10]3 years ago
8 0
I really need these points thx a lot
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Please help me out it would make my day!​
nlexa [21]

Answer:

Last option: Square both sides of the equation in step 1 to eliminate the square root.

Step-by-step explanation:

The error is in the process of subtracting 3 from both sides, since +3 is inside the root.

In order to be able to operate with the terms that are inside the root, we need to eliminate the root, and for that we need to square both sides of the equal sign.

6 0
3 years ago
Can someone SMART actually help me
lisov135 [29]
The answer is 196/3 pi in^3. All you have to do is multiply 7x7, then you have to multiply that by 1/3 and 4, and you get 65.333333333. Then, you have to turn it into a fraction. You have to multiply 65 by 3, then add one, and you get 196/3 pi in^3.
7 0
3 years ago
PLS HELP! What are the solutions of 4x^2-8x+5=0
Shkiper50 [21]
<span><span> x = -1/2 = -0.500
</span><span> x = 5/2 = 2.500

EITHER ONE WORKS</span></span>
3 0
3 years ago
Read 2 more answers
A candy store sells chocolate for $7.91 per pound. The piece you want to buy is .17 lbs. how much will it cost
Paul [167]

Answer:

1 piece will cost 2 cents

Step-by-step explanation:

If you divide 7.91 by 0.17, you will get 0.021492, and if you round that up you will get 0.02 which is 2 cents. Now if you want to find the price of more pieces, you can just multiply 2 by however the person needs to buy, and write that as money :)))

5 0
3 years ago
Read 2 more answers
-2x-y=-5 In slope intercept form please! :)
schepotkina [342]

Answer:

-2x - y = -5 in slop intercept form would be <u>y = -2x + 5 </u>

Step-by-step explanation:

-2x - y = -5

first add -2x to the left side to move it to the right side because whatever you do to one side u do to the other.

-y = -5 + 2x

divide by -1 on the whole equation

y = -2x + 5 is your answer.

8 0
3 years ago
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