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4 years ago

A set of art exam scores are normally distributed with a mean of

Mathematics

1 answer:

scZoUnD [109]4 years ago

8 0

Answer:

The percentage of people that scored less than Calvin is 38.21 %

Step-by-step explanation:

In this question, we are concerned with calculating the percentage of exam scores lesser than what Calvin scores.

To calculate this, we first need to calculate the standard score or the z-score of Calvin result.

Mathematically;

z = (x - mean)/SD

from the question, x = 78, mean = 81 and SD = 10

Substituting this, we have

z = (78 -81)/10 = -3/10 = -0.3

So we proceed to calculate the probability.

P(x < 78) or P(z < -0.3)

We make use of the standard table to get this probability

P(z< - 0.3) = 0.38209

In percentage, this is same as 38.209% or more simply 38.21%

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NemiM [27]

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angle of arc s = 360 - 106 = 254 degree

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3 years ago

Question 6 (2 points)

irinina [24]

to inverse a equation make all y's x and andy x's y

Thus the inverse is

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3 years ago

Determine the rate of change for thw graph: $____ per mile

Ira Lisetskai [31]

Answer:

$2 per mile

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (2, 5)

Point (4, 9)

Step 2: Find slope m

Substitute: $m=\frac{9-5}{4-2}$
Subtract: $m=\frac{4}{2}$
Divide: $m=2$

5 0

3 years ago

Which number is equivalent to 17.02? 17.020 , 17.22 , 17 , 17.002

Irina18 [472]

Answer:

Step-by-step explanation:

17.020

3 0

3 years ago

What’s a absolute deviation

Sergeeva-Olga [200]

Answer:

Absolute deviation is when you find the mean of a data set, then the difference between each number and the mean, then the average f the differences.

Step-by-step explanation:

Maddox: |10-9| = 1

Enrique: |10-13| = 3

Gloria: |10-9| = 1

McKenna: |10-10| = 0

Asher: |10-9| = 1

Hannah: |10-9| =

Danielle: |10-10| = 0

Katy: |10-10| = 0

Timothy: |10-11| = 1

Gentry: |10-9| = 1

Now you have the numbers: 1, 3, 1, 0, 1, 1, 0, 0, 1, 1,

Now find the mean of those numbers:

$\frac{1 + 3+1+0+1+1+1+0+0+1+1}{10} =\frac{10}{10} =1$

The absolute deviation is 1.

6 0

3 years ago