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mote1985 [20]
3 years ago
12

The average cost of tuition and room and board at a small private liberal arts college is reported to be $8,500 per term. A fina

ncial administrator believes that the average cost is higher. A study conducted using 350 small liberal arts colleges showed that the average cost per term is $8,745. The population standard deviation is $1,200. Let α
Mathematics
1 answer:
rewona [7]3 years ago
6 0

Answer:

D. +3.82

Step-by-step explanation:

The computation of the test static for this test is shown below:

Data provided in the question

\bar x= $8,745

\mu = $8,500

\sigma = $1,200 and n = 350

Now based on the above information, the test static for this test is

z = \frac{\bar x - \mu}{\frac{\sigma}{\sqrt{n} } }

z = \frac{\$8,745 - \$8,500}{\frac{\$1,200}{\sqrt{350} } } \\

= 3.82

= +3.82

Hence, the test static for this test is +3.82

We simply applied the above formula so that the correct value could come

And, the same is to be considered  

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If y = x2 + 2x , find the value of y when x = 5
Arturiano [62]

Answer:

Step-by-step explanation:

Okay so you are gonna substitute x for 5 so the equations will look like y= (5)2+(5)2

So 10+10 = 20

So y=20

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3 years ago
Hi, does anyone know the answer to this question? I’m bad at geometry and I’m struggling to answer it.
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Answer:

QT = 16

Step-by-step explanation:

ΔQRS ~ ΔQRT

In similar triangles, corresponding angles are in same ratio.

\frac{QS}{QR}=\frac{QR}{QT}\\\\\frac{25}{20}=\frac{20}{QT}

Cross multiply,

QT * 25 = 20 * 20

QT =\frac{20*20}{25}\\\\QT = 4*4\\\\QT = 16

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3 years ago
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Anastaziya [24]
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Hello,


See this file.
==============
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7 0
3 years ago
Please please help me out
mihalych1998 [28]

Answer:

A trinomial of degree 5

Step-by-step explanation:

A monomial has only 1 term

A binomial has 2 terms

A trinomial has 3 terms

4x^{5} + 3x³ - 7x ← has 3 terms and is therefore a trinomial

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