<span>The mean of a set of data is 148.87 and its standard deviation is 68.29. Find the z score for a value of 490.19
the z-score is given by:
z=(x-</span>μ<span>)/</span>σ
plugging in the values in the expression we get:
z=(490.19-149.87)/68.29
z=340.32/68.29
z=4.9835
Answer:
FALSE
Step-by-step explanation:
and 
are not equal.
If we assign numbers to both variables, for example x=1 and y = 2, we get:
. This shows that .5 is not equal to 2, therefore a fraction of something (x) is not always equal to a fraction of another something.
Answer:
c=62.8 a=314
Step-by-step explanation:
to find the circumfrence all you have to do is 2πr
and for area its πr²
The answer is -3. it is the only way to make the 6 negative
Answer:
(x−4)(2x−5)(x+9)
Step-by-step explanation:
Factor 2x3+5x2−97x+180
2x3+5x2−97x+180
=(x−4)(2x−5)(x+9)
