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skad [1K]
3 years ago
14

Given m||n, find the value of x. + 104 Answer:

Mathematics
2 answers:
abruzzese [7]3 years ago
5 0

Answer:

x = 104 degrees

Step-by-step explanation:

these lines make up the angles of 104 degrees and x degrees

x is across from 104 so

x = 104 degrees

bearhunter [10]3 years ago
4 0

Answer:

x = 104° because they are alternate interior angles and alternate interior angles are equal

Step-by-step explanation:

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The length of human pregnancies from conception to birth varies according to a distribution that is approximately normal with me
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Answer:

a) 229 and 305 days

b) 229 days or less

c) 305 days or more

Step-by-step explanation:

The Empirical Rule(68-95-99.7 rule) states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

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99.7% of the measures are within 3 standard deviations of the mean.

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Standard deviation = 19

(a) Between what values do the lengths of the middle 95% of all pregnancies fall?_____________and___________days

By the Empirical rule, 95% of all pregnancies fall within 2 standard deviations of the mean.

So

267 - 2*19 = 229 days

to

267 + 2*19 = 305 days

(b) How short are the shortest 2.5% of all pregnancies?______days or less

95% of all pregnancies fall within 2 standard deviations of the mean. The other 5% are more than 2 standard deviations from the mean. Since the distribution is symmetric, 2.5% is more than 2 standard deviations below the mean(shortest 2.5%) and 2.5% is more than 2 standard deviations above the mean(longest 2.5%). So

267 - 2*19 = 229 days

c) How long do the longest 2.5% of pregnancies last?________days or more

Explanation in b)

267 + 2*19 = 305 days

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