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Vadim26 [7]
2 years ago
5

If u help me then ill be your friend

Mathematics
2 answers:
bogdanovich [222]2 years ago
8 0

Answer:

- 3/2 is the answer:)

Step-by-step explanation:

Move the constant to the right

Calculate

Divide by both sides

Hope this helps!

marusya05 [52]2 years ago
7 0

Answer:

multiply both sides by 4

Step-by-step explanation:

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Oxana [17]
To find % you need decimal multiply by 100%
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If x=2 and y=3. What is x*y/xy+x*y​
Lunna [17]

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Step-by-step explanation:

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2 years ago
Assume that a cross is made between a heterozygous tall pea plant and a homozygous short pea plant. Fifty offspring are produced
Butoxors [25]

Answer:

1) \chi^2 = \frac{(30-25)^2}{25} +\frac{(20-25)^2}{25} =1 +1 =2

2) df = c-1 = 2-1

Where c represent the number of categories c=2

Step-by-step explanation:

Previous concepts

A chi-square goodness of fit test "determines if a sample data matches a population".

A chi-square test for independence "compares two variables in a contingency table to see if they are related. In a more general sense, it tests to see whether distributions of categorical variables differ from each another".

Assume the following dataset:

Tall =30 , Short =20

We need to conduct a chi square test in order to check the following hypothesis:

H0: The deviations from a 1:1 ratio (25 tall and 25 short) are due to chance.

H1: The deviations from a 1:1 ratio (25 tall and 25 short) are NOT due to chance.

Part 1

So then we know that the expected values would be 25 for each case

The statistic to check the hypothesis is given by:

\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}

And if we replace we got:

\chi^2 = \frac{(30-25)^2}{25} +\frac{(20-25)^2}{25} =1 +1 =2

Part 2

For this case the degreed of freedom are given by:

df = c-1 = 2-1

Where c represent the number of categories c=2

And we can calculate the p value given by:

p_v = P(\chi^2_{1} >2)=0.157

And we can find the p value using the following excel code:

"=1-CHISQ.DIST(2,1,TRUE)"

7 0
3 years ago
Howard cuts 54 centimeters off of a 1- meter board. how much of the board does Howard have left?
OLEGan [10]
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46 centimeters
0.46 meters
46% of the original board
23/50 of the original board
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Answer:

4 3/4

Step-by-step explanation:

i know stuff

8 0
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