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Katena32 [7]
3 years ago
9

Determine if the following statement is true or false.​ Why? The expected frequencies in a​ chi-square test for independence are

found using the formula below.
Expected frequency = (row total)(column total) / table total
Choose the correct answer below.
1. False. This formula gives the expected proportion. The (table total) factor in the denominator on the right should be squared.
2. True. It is a simplification of multiplying the proportion of a row variable by the proportion of the column variable to find the proportion for a cell, then multiplying by the table total.
3. True. The area to the right of this value in the corresponding chi-square distribution gives the P-value for the test.
4. False. The expected frequencies for a chi-square test are given by Oi - Ei/ Ei where i represents cell number.
Mathematics
1 answer:
a_sh-v [17]3 years ago
6 0

Answer:

Step-by-step explanation:

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Which expression would be easier to simplify if you used the associative property to change the grouping? O A. (170 + 30) – 41 O
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Answer:

A.(170+30)-41

Step-by-step explanation:

(170+30)-41=170+(30-41)

200-41=170+(-11)

159=170-11

159=159

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What is the midpoint of the segment (1, -1) (4, -6)
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6 0
3 years ago
QUESTION.<br> What is an improper fraction? An improper fraction:<br> Does anyone know this?
Kruka [31]

Answer:

An improper fraction is when the numerator of the fraction is larger than the denominator

For example, 13/4 is improper because 13 > 4

An improper fraction can be changed into a mixed number by dividing the numerator by the denominator

For example, 13 divided by 4 is 3 with remainder 1, or 3 1/4

Step-by-step explanation:

3 0
2 years ago
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Please answer quick!
marysya [2.9K]

Answer:

The correct option is B

(-1)(1/2)(-1)(1)

Step-by-step explanation:

First thing to notice is that there is are two brackets with negative values, which means that the result must also be positive (or have two brackets with negative values).

Looking at the options, we can screen out options A and D, they have three brackets with negative values, and can't be chosen.

It is now between options B and C.

Option B, by inspection is simply 1/2

Option C is 12/4 = 3

The problem itself is 12/35

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Since 12/35 is about 1/3, it is closer to 1/2 than 3, so 1/2 is the best option.

6 0
3 years ago
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