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3 years ago

I don't understand this please help i think its A but i don't know

Mathematics

2 answers:

loris [4]3 years ago

3 0

<span>B. The argument is invalid because the conclusion does not follow the premises. Hope this helps! :)
</span>

expeople1 [14]3 years ago

3 0

Answer:

B. The argument is invalid because the conclusion does not follow the premises.

Step-by-step explanation:

It is given △ABC and △QRS are congruent.In congruent triangles corresponding sides and angles are equal.

Thus the conclusion The corresponding angles of △ABC and △QRS are not congruent is not a valid statement.

If the triangles are congruent then the conclusion reached is not following the given statement .Hence The argument is invalid because the conclusion does not follow the premises.

Option B is the right answer.

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Consider a normal distribution curve where the middle 85 % of the area under the curve lies above the interval ( 8 , 14 ). Use t

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$\mu = 11$

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Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Middle 85%.

Values of X when Z has a pvalue of 0.5 - 0.85/2 = 0.075 to 0.5 + 0.85/2 = 0.925

Above the interval (8,14)

This means that when Z has a pvalue of 0.075, X = 8. So when $Z = -1.44, X = 8$ . So