To solve this problem, we make use of the z statistic. The
formula for z score is:
z = (x – μ) / s
where,
x = is the sample score = 21 or higher
μ = the population mean = 20.8
s = the standard deviation = 4.8
Solving for the z score:
z = (21 – 20.8) / 4.8
z = 0.0417
Next step to do is to find for the p value using the
standard distribution tables at z = 0.04. Since we are looking for the
probability of getting 21 or higher, therefore this is a right tailed test,
hence
p = 0.516
<span>So there is about 51.6% that a student will get a score of
21 or greater.</span>
Answer: Choice C) Linear negative association
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The given points are:
(1,5)
(2,4)
(3,3)
(4,2)
(5,1)
(6,0)
The x values are: 1, 2, 3, 4, 5, 6
The y values are: 5, 4, 3, 2, 1, 0
In the same order
As x increases by 1, y decreases by 1
So we have perfect negative linear correlation
Side Note: The equation of the line that goes through all of the points is the equation y = -x+6 which can be written as x+y = 6. This line has a negative slope (slope = -1)
Answer:
0.001953125
Step-by-step explanation:
Divide 34 by 512
34 ÷ 512 = 0.06640625
divide 0.06640625 by 34
0.06640625 ÷ 34 = 0.001953125
Check you work
34 × 0.001953125 = 0.06640625
Answer is 3 4 ÷ 5 12 = 3 4 × 0.001953125
The awnser is I think x=2
I think you did, but since you multiplied it by 2 #'s so you exponet is right