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Setler [38]
3 years ago
15

Private nonprofit four-year colleges charge, on average, $26,208 per year in tuition and fees. The standard deviation is $7,040.

Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible.
a. What is the distribution of X? X ~ N(
26208
Correct,
7040
Correct)

b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 22,924 per year.


c. Find the 60th percentile for this distribution. $
(Round to the nearest dollar.)
Mathematics
1 answer:
kolezko [41]3 years ago
5 0

Answer:

#########

Step-by-step explanation:

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PLEASE HELPPPPP !!!!! Question 3(Multiple Choice Worth 5 points) (09.02 MC) Quadrilateral OPQR is inscribed in circle N, as show
Andrew [12]

Answer: \angle QRO=67^{\circ}

Step-by-step explanation:

Since, If a quadrilateral is inscribed in a circle then the sum of one pair of opposite angles must be equal to 180°.

And, here quadrilateral  OPQR is inscribed in circle N.

Thus, \angle O+\angle Q=180^{\circ} -------(1)

And, \angle P+\angle R=180^{\circ}   -------(2)

According to the question,\angle O=(x+17)^{\circ}, \angle Q=(6x-5)^{\circ}

And, \angle R=(2x+19)^{\circ}  -------(3)

We have to find out \angle QRO or \angle R.

Thus, from equation (1), (x+17+6x-5)^{\circ}=180^{\circ} ⇒x=24^{\circ}

Therefore, From equation (3), \angle QRO=\angle R= (48+19)^{\circ}

⇒\angle QRO=67^{\circ}




5 0
3 years ago
Read 2 more answers
The decline of salmon fisheries along the Columbia River in Oregon has caused great concern among commercial and recreational fi
Rasek [7]

Answer:

Check the explanation

Step-by-step explanation:

sample size n=                                          10  

number of independent variables p=        1  

degree of freedom =n-p-1=                        8  

estimated slope b=                                   0.71  

standard error of slope=sb=                  0.0480

for 95 % confidence and 8 degree

of freedom critical t=                                  2.31

95% confidence interval =

b1 -/+ t*standard error=                          (0.6,0.82)

6 0
3 years ago
The table below summarizes baseline characteristics on patients participating in a clinical trial
Stels [109]
The best and most correct answer among the choices provided by the question is the fifth choice which is both A and B.


Age and total cholesterol are <span>baseline characteristics are significantly different (at the 0.05 level of significance) between treatment groups.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
8 0
4 years ago
A history teacher gives a 17 question True or false exam. In how many different ways can the test be answered if the possible an
monitta

Answer:

Step-by-step explanation:

if it's only true or false there are 2¹⁷=131072 outcomes

if it's true, false, or blank there are 3¹⁷=129140163 outcomes

7 0
3 years ago
Zack has been planting young trees in his garden. The maple tree that is 42 inches tall is growing 1 inch per month, whereas the
kolezko [41]

In 16 months, two trees will be of same height

The trees will be of 58 inches tall

<em><u>Solution:</u></em>

Let "x" be the number of months

<em><u>The maple tree that is 42 inches tall is growing 1 inch per month</u></em>

Thus, equation for maple tree is given as:

Maple tree : 42 + 1 inch (number of months)

Maple tree : 42 + x ------- eqn 1

<em><u>The oak tree that is 10 inches tall is growing 3 inches per month</u></em>

Thus, equation for oak tree is given as:

Oak tree : 10 + 3 inch (number of months)

Oak tree : 10 + 3x -------- eqn 1

<em><u>For two two trees to be equal in height, equate eqn 1 and eqn 2</u></em>

42 + x = 10 + 3x\\\\3x - x = 42 - 10\\\\2x = 32\\\\x = 16

Thus, in 16 months, two trees will be of same height

<em><u>What will that height be?</u></em>

Substitute x = 16 in any one eqn

10+3x = 10 + 3(16) = 10+48 = 58

Thus the trees will be of 58 inches tall

3 0
4 years ago
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