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3 years ago

12

10 POINTSSSSSS HALPPP

1 answer:

dezoksy [38]3 years ago

8 0

Answer:

51.9

8.9

78.5

8.8

Explanation:

You round up if the number to the right is 5 or greater.

So, apply this to the numbers and the 8 in A rounds up, going to a 51.9.

The 9 does not round up because of the one.

The 5 also does not round up because of the 2.

The 7 does round up because of the 6.

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The College Student Journal (December 1992) investigated differences in traditional and nontraditional students, where nontradit

IceJOKER [234]

Answer:

94.52% probability that the random sample of 100 nontraditional students has a mean GPA greater than 3.42.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 3.5, \sigma = 0.5, n = 100, s = \frac{0.5}{\sqrt{100}} = 0.05$

What is the probability that the random sample of 100 nontraditional students has a mean GPA greater than 3.42?

This is 1 subtracted by the pvalue of Z when X = 3.42.

$Z = \frac{X - \mu}{s}$

$Z = \frac{3.42 - 3.5}{0.05}$

$Z = -1.6$

$Z = -1.6$ has a pvalue of 0.0548.

So there is a 1-0.0548 = 0.9452 = 94.52% probability that the random sample of 100 nontraditional students has a mean GPA greater than 3.42.

6 0

3 years ago

Select the correct answer

Natali [406]

Adolescences is the answer

7 0

3 years ago

Read 2 more answers

After traveling 345 miles, the

zmey [24]

Answer:

c82927uhs ey7yejehjruduf8ejhriciej

4 0

3 years ago

URGENT! PLEASE HELP 10 POINTS!

Thepotemich [5.8K]

Your answer would be, Point A(4, 2) is translated according to the rule (x, y) ==> (x + 1, y - 5), and then reflected across the Y- Axis.

A.). So, Point A(4, 2) is in the first Quadrant.

B.). The Co-ordinates translated Point A (5, - 3), are in the Fourth Quadrant.; Lower Right

C.). The Co-ordinates of the reflected Point A ( - 5, - 3), are in the Third Quadrant.

Reflection Across Y- Axis:

(x, y) ===> ( - x, y) ======> (5, - 3) ====> ( -5, - 3)

Reflection:

(x, y) ====> ( x + 1, y - 5) =====> ( 4, 2) =====> (5, - 3)

Y - Axis =======> l ======> A

X - Axis l =======> A =======> l =======> A

Hope that helps!!! : )

8 0

4 years ago

The triangles above are similar write a similarity statement if possible solve for x the images are not drawn to scale

e-lub [12.9K]

Answer:

The value of x is 8.

Step-by-step explanation:

In triangle PQR and XZY,

$\angle P=\angle X=90^{\circ}$

$\angle Q=\angle Z$

$\angle R=\angle Y$

By AA property of similarity, we can say that

$\triangle PQR\sim \triangle XZY$

The similarity statement is $\triangle PQR\sim \triangle XZY$ .

The corresponding sides of similar triangles are proportional. Since both triangles are similar, so

$\frac{PQ}{QR}=\frac{XZ}{ZY}$

$\frac{21}{28}=\frac{5x+2}{7x}$

$\frac{3}{4}=\frac{5x+2}{7x}$

$7x\times 3=(5x+2)\times 4$

$21x=20x+8$

$21x-20x=8$

$x=8$

Therefore the value of x is 8.

4 0

4 years ago