Is this number written in scientific notation 4.8•100^7
1 answer:
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Here’s the correct answer and the way i got to it. Hope this helps :)
To answer this question, we need to know what absolute value is in the first place. <u><em>ANSWERS ARE AT THE BOTTOM.</em></u>
Absolute value represents how far something is from 0 in a number line.
For example, lets take 4.
4 is 4 units away from 0 on the number line, so the absolute value of 4 is 4.
Now lets look at another example, -4. -4 is also 4 units away from 0, just in the other direction. However, when calculating absolute value, we do not care about the direction. Therfore, the absolute value of -4 is also 4.
Now let's look at your problem.
You want the <em>absolute value</em> of 0 and -4/5
<u><em>Following the same principle above about the distance from 0, here are your answers:</em></u>
<u><em></em></u>
<u><em>Absolute value of 0</em></u><u><em>: </em></u><em>0</em>
<em></em>
<u><em>Absolute value of -4/5</em></u><u><em>: </em></u><em>4/5</em>
The probability of the sample is 0.5 or 50%
<u>Explanation:</u>
Given:
Mean, μ = 20
Standard deviation, δ = 1.3
Probability of sample being less than 20.1 = ?
P (x < 20.1) = 20.1 - μ / δ √n
P (x < 20.1) =
= 0.0098
P( x < 20.1) = P(z < 0.0098)
P (z < 0.0098) = 0.5
The value of P is found out using a z score table.
Therefore, probability of the sample is 0.5 or 50%