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3 years ago

Find the median of 8, 9, 9, 11, 12, 16.A) 8 B) 9 C) 10 D) 11

Mathematics

2 answers:

never [62]3 years ago

7 0

Answer:

Step-by-step explanation:

11+9=20

20/2

natulia [17]3 years ago

6 0

Answer:

Option C, 10

Step-by-step explanation:

<u>Step 1: Find the median which is the middle of the set </u>

8, 9, 9, 11, 12, 16

Since the middle is between 9 & 11 find the middle between those two numbers.

The middle is 10 since it is right between 9 & 11.

Answer: Option C, 10

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If 5 out of 30 students scored an A on a quiz.what percent did not get an A on the quiz?Round to the nearest whole percent.

Inessa [10]

Answer:

83 %

Step-by-step explanation:

If 5 out of 30 got an A, that means that

30 -5 = 25

25 out of 30 did not get and A

25/30 = .8333333 = 83.33333 %

Rounding to the nearest whole percent

83 %

8 0

2 years ago

Jerry took a sample of 4 employees in his office and observed how many hours they each worked one day.

Illusion [34]

The error in Jerry's calculation is 4.84

The number of employees, N = 4

The mean is calculated as:

$\mu = \frac{10+2+4+8}{4} \\\mu = \frac{24}{4} \\\mu = 6$

The formula for the standard deviation is:

$SD =\sqrt{\frac{\sum{(x-\mu)^2}}{N} }$

This can be further calculated as:

$SD = \sqrt{\frac{(10-6)^2+(2-6)^2+(4-6)^2+(8-6)^2}{4} }\\\\SD = \sqrt{\frac{4^2+(-4)^2+(-2)^2+(2)^2}{4} } \\\\SD = \sqrt{\frac{16+16+4+4}{4} } \\\\SD = \sqrt{\frac{40}{4} } \\\\SD = \sqrt{10} \\\\SD = 3.16$

Jerry thinks the Standard Deviation = 8

The true Standard Deviation = 3.16

Error = |True value - Measured value|

Error = |3.16 - 8|

Error = 4.84

Learn more here: brainly.com/question/18562832

3 0

2 years ago

Read 2 more answers

I need help can someone please help me

Vladimir [108]

Answer:

1a)

5 green circles

1 green square

2 red circles

4 red circles

1b) probability is 5/12

Step-by-step explanation:

count for each (1a)

count every shape=12

since there is 5 green circles

the probability is 5/12

8 0

3 years ago

CAN SOMEONE PLEASE ANSWER MY QUESTIONNNNNNNN

Aliun [14]

No , no, no, yes it is , yes it is

6 0

3 years ago

Read 2 more answers

I am supposed to simplify 1/a-b - 1/b-a

Andre45 [30]

Answer:

see explanation

Step-by-step explanation:

Given

$\frac{1}{a-b}$ - $\frac{1}{b-a}$

Before subtracting the fractions, we require them to have common denominator.

Multiply the numerator/denominator of the second fraction by - 1

$\frac{1}{b-a}$ × $\frac{-1}{-1}$ = $\frac{-1}{a-b}$

We now have

$\frac{1}{a-b}$ - $\frac{-1}{a-b}$ ← common denominators

= $\frac{1}{a-b}$ + $\frac{1}{a-b}$

= $\frac{1+1}{a-b}$

= $\frac{2}{a-b}$

5 0

4 years ago