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Nikitich [7]
3 years ago
12

Correct answers only please!

Mathematics
2 answers:
Troyanec [42]3 years ago
6 0

Answer:

B. 71%

Step-by-step explanation:

95 × 10% = 9.5%

80 × 20% = 16%

67 × 50% = 33.5%

61 × 20% = 12%

Total - 71%

aliya0001 [1]3 years ago
6 0

Answer:

I tried it several times and the answer I came up with was 62%

Step-by-step explanation:

95 x 10% = 9.5

80 x 20% = 16

67 x 50% = 33.5

60 x 20% = 12

9.5+16+33.5+12=71

71 \div 4 = 62

So it's 61%.

I don't think any of those answers are correct. :(

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Answer:

By the Central Limit Theorem, the sampling distribution is approximately normal, with mean 30 and standard deviation 0.1.

Step-by-step explanation:

Central Limit Theorem

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For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

The batteries produced in a manufacturing plant have a mean time to failure of 30 months with a standard deviation of 2 months.

This means that \mu = 30, \sigma = 2

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