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valentina_108 [34]
3 years ago
15

Question ProgressHomework Progress5/18 MarksThe ratio 15:3 in its simplest form isI​

Mathematics
1 answer:
AURORKA [14]3 years ago
5 0

1. 15/3:3/3

2. 5:1

1. find the same denominator

2. divide by denominator

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suppose that 23% of the people have a dog, 18% of the people have a cat and 5% of people own both. what is the probability that
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<h2>Addition</h2><h3>Concept</h3>

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In this problem, you are told to find the probability (or %) that someone owns either a dog, OR a cat. If they own both - then they do in fact own a dog or cat. So the formula is:

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Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed
vlabodo [156]

Answer:

95% two-sided confidence interval on the true mean breaking strength is (94.8cm, 99.2cm)

Step-by-step explanation:

Our sample size is 11.

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

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Then, we need to subtract one by the confidence level \alpha and divide by 2. So:

\frac{1-0.95}{2} = \frac{0.05}{2} = 0.025

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s = \frac{4}{\sqrt{11}} = 1.2060

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95% two-sided confidence interval on the true mean breaking strength is (94.8cm, 99.2cm).

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