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katovenus [111]
3 years ago
14

Next question! Help please!!

Mathematics
1 answer:
zavuch27 [327]3 years ago
5 0
(4*9)-5 = 31
(6*9)-5 = 49
(2*9)-5 = 13
(7*9)-5 = 58

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liubo4ka [24]

ANSWER:

The average burnout time of a large number of bulbs has a sampling distribution that is close to Normal.

STEP-BY-STEP EXPLANATION:

The cental limit theorem states, that id the sample size is large (30 or more), then the sampling distribution of the sample means is approximately normal with mean ц and standar deviation б/\sqrt{n}

Thus the correct answer is the average burnout time of a large number of bulbs has a sampling distribution that is close to Normal.

6 0
3 years ago
What is the average of the four smallest of integers ?
Elanso [62]
This question is easier than it seems. If there are 9 consecutive integers with the mean being 16, then 16 must be the median. So just add four on top and four below 16 to give you your range of 9 values, 12-20. 12+13+14+15+16+17+18+19+20=144, 144/9=16. So the mean of the first four numbers is (12+13+14+15)/4= 13.5. If you check, 13.5 is also the median of these four numbers.

 
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3 years ago
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finlep [7]

Answer:

2x² + 6 = 34x

Step-by-step explanation:

2x² - 10x + 6 = 24x

Collect like terms

2x² + 6 = 24x + 10x

2x² + 6 = 34x

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BlackZzzverrR [31]

Answer:

6

Step-by-step explanation:

6 0
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1. The temperature on a winter night in Kansas is - 6 Celsius. The
ira [324]
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