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DanielleElmas [232]
3 years ago
12

At the beginning of a semester an anonymous survey was conducted on students in a statistics class. Two of the questions on the

survey were about gender and whether or not students have equal, more, or less energy in the afternoon compared to the morning. Below are the results.
Equal Less More
Female 18 37 24
Male 9 15 23
What test should we perform to see if gender and energy level are associated?

a. Chi-square test of independence
b. Chi-square test of goodness of fit
c. Comparing two proportions
d. Comparing two means
Mathematics
1 answer:
kati45 [8]3 years ago
4 0

Answer:

a. Chi-square test of independence

Step-by-step explanation:

The chi square statistics is also used to test the hypothesis about the independence of two variables each of which is classified into a number of categories or attributes.

In the given problem the Equal , more or less are the attributes.

The goodness of fit test is applicable when the cell probabilities depend upon the unknown parameters  provided that the unknown parameters are replaced with their estimates and provided that one degree of freedom is deducted for each parameter estimated.

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What is the difference between -131 and -87 on a number line
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44 because the absolute values are 131 and 87 and to find difference you subtract.

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34=17(Tulip number)
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5 0
3 years ago
5(b)
viva [34]

If the side length is greater than 11.11 cm then it will not overflow.

Otherwise, it will overflow.

If Joe tips the bucket of water in a cuboid container and the water is not overflowing then the cuboid container must be of volume greater than 1370 cm³.

We find the cube root of 1370 cm³.

\sqrt[3]{1370} \approx11.11

Then the cuboid container should have a side of length greater than 11.11 cm.

Here the statement  "If I tip my bucket of water in the cuboid container, it will never overflow" is correct or wrong based on the information that the container has a side length lesser or greater than 11.11 cm.

If the side length is greater than 11.11 cm then it will not overflow.

Otherwise, it will overflow.

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brainly.com/question/1578538

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7 0
1 year ago
If the zeros of f(x) are x=-1 and x=2, then the zeros of f(x/2) are
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Answer:

E (-2, 4).

Step-by-step explanation:

(x/2 + 1)(x/2 - 2) = 0

x/2 = -1,  x/2 = 2

x = -2, 4.

The roots will be 2 times the roots of f(x).

6 0
2 years ago
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Answer:

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18x - 12x = -30

6x = -30

x = -30 /6

x = -5

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3 years ago
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