Answer:
Step-by-step explanation:
2^9
2^-2 * 2^11
(2*2*2*2*2)*(2*2*2*2)
Answer:
The reading speed of a sixth-grader whose reading speed is at the 90th percentile is 155.72 words per minute.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

What is the reading speed of a sixth-grader whose reading speed is at the 90th percentile
This is the value of X when Z has a pvalue of 0.9. So it is X when Z = 1.28.




The reading speed of a sixth-grader whose reading speed is at the 90th percentile is 155.72 words per minute.
It’s not a function because the domain (the X) is repeating...
X cannot repeat if you want it to be a function
Answer:
y - 7 =
(x + 8)
Step-by-step explanation:
Use the slope formula
to work out the slope
Then pick one point to insert into the formula y - y1 = m(x - x1)