Ask question

Ask question

All categories

2 years ago

6

For a sample with a mean of M = 50 and a standard deviation of s = 10, a z-score of z = +2.00 corresponds to X = 70. True or Fal

se?

1 answer:

qwelly [4]2 years ago

4 0

Z score = (x-μ)/σ

2 = (x-50) / 10; solve for x

20= x-50 and x = 70 : TRUE

You might be interested in

Please answer all

mr_godi [17]

Answer:

Give me these points

Step-by-step explanation:

7 0

2 years ago

If 24 marks is 60% what is full marks

Luda [366]

If 24 marks is 60 %, then full marks is 40

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

Given that 24 marks is 60 %

We are asked to find the full marks

Let the full marks be "x"

So out of "x" marks, he has got 24 marks

Therefore,

60 % of full marks = 24

60 % of x = 24

$60 \% \times x = 24\\\\\frac{60}{100} \times x = 24\\\\0.6x = 24\\\\x = \frac{24}{0.6}\\\\x = 40$

Therefore, full marks is 40

<h3><u>Method 2:</u></h3>

If 60 % is 24, then we have to find what is 100 %

60 % = 24

100 % = x

This forms a proportion, So we can solve the sum by cross multiplying

$60 \% \times x = 24 \times 100 \% \\\\60x = 2400\\\\x=\frac{2400}{60}\\\\x = 40$

Thus full marks is 40

8 0

2 years ago

Evaluate 2x-5x+ 12<br> when x = -2

vodka [1.7K]

Answer:

2(-2)-5(-2)+12

-4-(-10)+12

6+12

18

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

How do you solve these

IRINA_888 [86]

In the first equation, you can tell that the x's are being multiplied by 3 to get to the y's so the blank will be 9. The second table would not be a function since all the x values are not being multiplied by the same number to get the y value. Hope this helps!

4 0

3 years ago

Can someone help me out with this one?

Juliette [100K]

I recommend u use the app called photomath. It works a lot.

8 0

3 years ago