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Nata [24]
3 years ago
7

HELP!!! I HAVE TO DO THIS!! WILL GIVE

Mathematics
1 answer:
sertanlavr [38]3 years ago
3 0

Answer:

1. 9.576

2. 17.442

3. 45.29

4. 79.294

5. 30.736

6. 30.8

7. 31.5

8. 25.85

9. 53.29

10. 49.184

11. 15.18

12. 15.573

13. 17.075

14. 74.06

15. 9.01

Step-by-step explanation:

Use a multiplication method to find the answers. I would put it up here but i dont know how.

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Answer

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Step-by-step explanation:

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8 0
3 years ago
Solve for x: 1 over 4 (2x − 14) = 4. 15 15 over 2 9 11
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3 0
3 years ago
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3 years ago
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A manufacturing plant uses light bulbs whose life spans are normally distributed, with mean and standard deviation equal to 500
meriva

Answer:

602.50 hours

Step-by-step explanation:

Given that a  manufacturing plant uses light bulbs whose life spans are normally distributed, with mean and standard deviation equal to 500 and 50 hours,

It was decided to replace the bulbs so that no more than 2% of the bulbs to burn out between replacement periods

i.e. we have to construct 98% confidence interval right tailed to get this.

Z value is 2.05 for this (Upper tailed 0.98 probability)

Hence margin of error = 2.05 (std dev)\\=2.05(50)\\= 102.50

The upper bound for this would be

500+102.50 =602.50

So to keep below 2% the bulbs to burn out it should be replaced before 602.50 hours.

4 0
3 years ago
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