2 years ago

What is the correlation coefficient for the data shown in the

Mathematics

1 answer:

SCORPION-xisa [38]2 years ago

7 0

Answer:

Step-by-step explanation:

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Choose the point-slope form of the equation below that represents the line that passes through the points (-6, 4) and (2, 0).

Arte-miy333 [17]

Point slope form
y-y1=m(x-x1)
slope=m
a point is (x1,y1)

slope=(y2-y1)/(x2-x1)
given
(-6,4) and (2,0)
slope=(0-4)/(2-(-6))=-4/(2+6)=-4/8=-1/2

a point is (-6,4)
x1=-6
y1=4

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3 years ago

If 28% of students in College are near-sighted, the probability that in a randomly chosen group of 20 College students, exactly

cluponka [151]

Answer: (D) 16%

Step-by-step explanation:

Binomial probability formula :-

$P(x)=^nC_xp^x(1-p)^n-x$ , where n is the sample size , p is population proportion and P(x) is the probability of getting success in x trial.

Given : The proportion of students in College are near-sighted : p= 0.28

Sample size : n= 20

Then, the the probability that in a randomly chosen group of 20 College students, exactly 4 are near-sighted is given by :_

$P(x=4)=^{20}C_4(0.28)^4(1-0.28)^{20-4}\\\\=\dfrac{20!}{4!16!}(0.28)^4(0.72)^{16}\\\\=0.155326604912\approx0.16\%$

Hence, the probability that in a randomly chosen group of 20 College students, exactly 4 are near-sighted is closest to 16%.

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3 years ago

What is the slope of the graph of 4x-8y=11?

Vlada [557]

In the fomr
ax+by=c
-a/b=slope

4x-8y=11
a=1
b=-8
slope=-4/-8=4/8=1/2

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3 years ago

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If you were to randomly select a letter from the word below, what is the probability that letter would be a vowel?

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