2 years ago

What’s is the measure of

Mathematics

1 answer:

enyata [817]2 years ago

3 0

Answer:

90 degrees

Step-by-step explanation:

A rhombus has 4 congruent sides, which means that if the cross each crossing part is 90 degrees

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2 ounce bag will cost less than $1.25

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$3.60 ÷ 3 = $1.20
OR
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3 years ago

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gladu [14]

Answer: a) (176.76,172.24), b) 0.976.

Step-by-step explanation:

Since we have given that

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Standard deviation = 6.9 cm

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we need to find the 98% confidence interval.

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

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

Hence, a) (176.76,172.24), b) 0.976.

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2 years ago

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What is the series you are referring too?

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3 years ago

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fredd [130]

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