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katrin [286]
2 years ago
14

I need help with this question

Mathematics
1 answer:
k0ka [10]2 years ago
4 0
We use a chi-square test of homogeneity, as we have a single categorical variable measured within two different populations.

The requirements for this test are that we have two simple random samples (this is clearly satisfied, given that we are sampling all students who take the class that year) and that the expected value for each cell, defined as the cell's row sum multiplied by the column sum divided by the sum of all values in the dataset, is greater than 5.  This is satisfied simply by testing for each value in the table.
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A had $360 more than B. When A spent $144 and B spent half of his money, A had 6 times as much money as B, Find the ratio of the
Karolina [17]

Answer:

13:3

Step-by-step explanation:

A=x B=y

first; x= 360+y

later;x= 216+y

A:B

216+y: 1/2y = 6: 1

216+y/y÷2 =6/1

216+y = 3y

y = 108

first; x =360+y

360 +108

468

A:B = 468:108

13:3

3 0
3 years ago
Find the slope of the lines through the points (2,-5) and (7,1)
ELEN [110]

Answer:slope=1.2


Step-by-step explanation:

Slope=y-y/x-x

=1-(-5)/7-2

= 6/5

=1.2


7 0
3 years ago
0.79 x 3.7 =<br> please explain your process
mart [117]

This question is super easy.

0.79*3.7

=2.923

Hope this helps!

Thanks!

-Charlie

3 0
3 years ago
A rectangular swimming pool is 17 meters long, 14 1/2 meters wide, and 3 1/2 meters deep. What is its volume?
Juliette [100K]

Answer:

862.75 meters^3

Step-by-step explanation:

(17)(14.5)(3.5)=862.75

5 0
3 years ago
Read 2 more answers
Find a formula for the linear function with slope -9 and x-intercept 2.
gregori [183]
Hello : 
<span> formula for the linear function with slope -9 and x-intercept 2 is : 
y - 0 = -9(x-2)
y= -9x +18

</span>
4 0
3 years ago
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