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love history [14]
3 years ago
8

The chi-square test assesses whether the _____ observed in a cross-tabulation diverge from those one would expect under the null

hypothesis of no difference between groups.
Mathematics
1 answer:
pantera1 [17]3 years ago
3 0

Answer: Frequencies .

Step-by-step explanation:

In statistics theory the chi-square test statistic is calculated by considering each cell and the expected frequency is subtracted from the observed frequency after that the difference is squared, and the total is divided by the expected frequency. This is highlight that the key focus of the chi-square test is the frequencies .

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What is the solution set for 5x>15?
denis23 [38]

Answer= X>3

5x>15

Divide both sides by 5x

\frac{5 x}{5x}  >  \frac{15}{5x}

5x will cancel with 15. You get 3

So, x>3

6 0
3 years ago
Which expression can be used to find 38% of 20
lubasha [3.4K]

Answer:

A.

Step-by-step explanation:

38% = 38/100 = 0.38

A percentage is anything over 100

8 0
3 years ago
Old Shark Tank Length: 20 meters Width: 4 meters Helght: 10 meters Terrence knows that each shark needs 25 cubic meters of space
schepotkina [342]

Answer:

volume of old tank=20×4×10=800m³

no of shark adjust =800/25=32 sharks is adjusted in old shark tank

for new

if length=25℅0f 20+20=25m

breadth=25%of 4 +4=1+4=5m

height is same=10m

new volume =25×5×10=1250m³

total no.of shark adjust=1250/25=50 shark

50-32=18 more shark that the new tank hold.

4 0
3 years ago
If the coordinates of point A are (8 , 0) and the coordinates of point B are (3 , 7), the y-intercept of AB is ___
JulsSmile [24]

Answer:

a) y-intercept of AB is 56/5

b) equation of line CD is:

y = -7/5x + 12

Step-by-step explanation:

a) If the coordinates of point A are (8 , 0) and the coordinates of point B are (3 , 7), the y-intercept of AB is ___

We are given the points A(8,0) and point B (3,7)

We need to find y-intercept i.e b

Finding slope of points A and B = y₂ - y₁/x₂ - x₁

=7-0/3-8

=7/-5

= - 7/5

So, finding y intercept b by using equation

y = mx+b

And considering point A (8,0) x = 8 and y = 0 and m = -7/5

0 = 8(-7/5) + b

0 = -56/5 + b

=> b = 56/5

So, y-intercept of AB is 56/5

b) If the coordinates of point D are (5 , 5), the equation of line CD is y = __

Since AB || CD

both will have same slope

i.e m = -7/5

we need to find y-intercept given point D (5,5)

y = mx+b

5 = -7/5(5)+b

5 = -7 + b

=> b = 5+7

=> b = 12

So, equation of line CD is:

y = -7/5x + 12

9 0
3 years ago
The following table gives the science scores and times spent studying for 10 students:
AveGali [126]
There appears to be a positive correlation between the number of hour spent studydng and the score on the test.

When identifying the independent and dependent quantities, we think about what would cause the other to change.  The score on the test would not cause the number of hours spent studying to change; rather, the number of hours spent studying would cause the score to change.  This means that the number of hours studying would be the independent quantity and the score would be the dependent quantity.

Plotting the graph with the time studying on the x-axis (independent) and the score on the y-axis (dependent) gives you the graph shown.  You can see in the image that there seems to be a positive correlation; the data seem to generally be heading upward.

8 0
3 years ago
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