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Nesterboy [21]
2 years ago
6

PLEASE help me with this sorry if it’s sideways if something is wrong let me know

Mathematics
1 answer:
VladimirAG [237]2 years ago
6 0

Answer: left to right up to down  no   no   yes   no   yes   yes

Step-by-step explanation: hope it helps

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The quality control manager of a light bulb factory needs to estimate the average life of a large shipment of light bulbs. The p
eimsori [14]

Answer:

b) yes

The manufacturer has the right to state that the light bulbs last on average 400 hours

Step-by-step explanation:

<u><em>Explanation:-</em></u>

<em>Given sample size 'n' = 64</em>

<em>Given standard deviation of the Population (σ)=100</em>

<em>Mean of the sample (x⁻) = 350 hours</em>

<em>95% of confidence interval is determined by</em>

(x^{-} -Z_{0.95} \frac{S.D}{\sqrt{n} } , x^{-} +Z_{0.95} \frac{S.D}{\sqrt{n} } )

((350 -1.96 \frac{100}{\sqrt{64} } , 350+1.96\frac{100}{\sqrt{64} }  )

(350-24.5 , 350+24.5)

<em>(325.5 , 374.5)</em>

<u><em>Conclusion:-</em></u>

<u><em>Yes</em></u>

The manufacturer has the right to state that the light bulbs last on average 400 hours

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3 years ago
I need help in this 10q quiz ​
slava [35]

Answer:

option A

Step-by-step explanation:

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Ave: 7k- 14 = 42<br> How do you solve it
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Im going to guess k is the unknown

Step-by-step explanation:

7k-14=42

42+14=7k

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Which shows how to determine the volume of the pyramid?
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The first opinion

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