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3 years ago

Please try to explain the answer and I'll mark the Brainliest.

Mathematics

2 answers:

laiz [17]3 years ago

6 0

Inside a triangle, all inside angles add up to 180°

So, add the two angles:

26.4°+33.7°=60.1°

180°-60.1°=119.9°

b=119.9°

Lady bird [3.3K]3 years ago

6 0

Are you asking about finding the degree of B? If you are the answer I believe would be 119.9° If you think about it, the total degrees of a triangle is 180° so you would subtract the the degrees of both A and C from 180° and get 119.9°. Sorry if that’s not what you were asking for.

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3 years ago

9.4 The heights of a random sample of 50 college stu- dents showed a mean of 174.5 centimeters and a stan- dard deviation of 6.9

gladu [14]

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Step-by-step explanation:

Since we have given that

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So, z = 2.326

(a) Construct a 98% confidence interval for the mean height of all college students.

$x\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=(174.5\pm 2.326\times \dfrac{6.9}{\sqrt{50}})\\\\=(174.5+2.26,174.5-2.26)\\\\=(176.76,172.24)$

(b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centime- ters?

Error would be

$\dfrac{\sigma}{\sqrt{n}}\\\\=\dfrac{6.9}{\sqrt{50}}\\\\=0.976$

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3 years ago

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Scorpion4ik [409]

3,8
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