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earnstyle [38]
3 years ago
7

Which of the following z-scores indicates the most extreme observation?

Mathematics
1 answer:
UNO [17]3 years ago
5 0

Answer:

Step-by-step explanation:

Normally Z scores in a std normal distribution curve lie between -3 and 3 comprising more than 99% of total area.

Any entry outside (-3,3) can be considered as an extreme observation.

Here we have hence a) -4.3 is the most extreme observation.

-------------------------

Given that 84 separates the lowest 75% of the scores from the highest 25% of the scores,

This means 84 is the 75th percentile and similarly 65 is the 25th percentile.

Thus we have 84 has the percentile rank of 75

Option C

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Each person will get 1.6 parts of the cookies or 1 3/5 cookie. 
You do 8/5=1.6
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3 years ago
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Janae and Jerome each have m marbles. Gwen has 4(m + 2) marbles. John has 8m + 4 marbles. If John has more marbles than Janae, J
Ne4ueva [31]

Answer:

C, D, E

Step-by-step explanation:

The numbers of marbles are:

  • Janae - m;
  • Jerome - m;
  • Gwen - 4(m+2);
  • John - 8m+4.

Janae, Jerome, and Gwen combined have

m + m + 4(m+2) = m + m +4m + 8 =6m + 8 marbles.

If John has more marbles than Janae, Jerome, and Gwen combined, then

8m+4>6m+8,\\ \\8m-6m>8-4,\\ \\2m>4,\\ \\m>2.

So, possible answers are

  • Janae and Jerome each have 3 marbles;
  • Janae and Jerome each have 4 marbles;
  • Janae and Jerome each have 5 marbles.
7 0
2 years ago
What is the coefficient of the y-term in the expression 4x+5xy–2y?
ExtremeBDS [4]
The coefficient is the number in front of the variable
7 0
3 years ago
Find the coordinates of the circumcenter of the triangle with the given vertices. X(-2, 1), Y(2, -3), Z(6, -3).
lana [24]

Answer:

C (4,3)

Step-by-step explanation:

Steps to find the circumcenter:

1) Find and Calculate the midpoint of given coordinates or midpoints.

2) Calculate the slope of the perpendicular bisector lines

3) By using the midpoint and the slope, find out the equation of the line

( y-y_1 )= m(x-x_1)

4) Do the same for another line

Solve the equations of two lines to get the intersection point.

The intersection point will be the circumcenter of the triangle.

Given :

X(-2,1), Y(2,-3), Z(6,-3)

Please see the attached file:

5 0
2 years ago
Name three rational numbers that are between 7 and 8
DerKrebs [107]
7.1 and 7.5 because any integer is a rational number 
7 0
3 years ago
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