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Ilya [14]
3 years ago
6

How to do expected frequency for chi^2 goodness fit test ​

Mathematics
2 answers:
Sophie [7]3 years ago
4 0
How do you find the expected frequency in a chi square goodness of fit?
Pearson's chi-square goodness of fit test statistic is: - where Oj are observed counts, Ej are corresponding expected count and c is the number of classes for which counts/frequencies are being analysed.
...
Chi-square Goodness of Fit Test.
Value Observed frequency Expected frequency
3 29 14.96
4 8 5.61
vitfil [10]3 years ago
4 0

Step-by-step explanation:

So basically you're going to start with your (expected value - observed value) squared

(O-E)²

You're then gonna divide that by your expected value that you just used

(O-E)²/E

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What is x +92 x 32 when x is 50
ANEK [815]
The answer is 184 like du
4 0
4 years ago
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I need help tyyyyyyyy
Montano1993 [528]

Answer:

-17

Step-by-step explanation:

-4x-17+x=-3x+----  

-3x-17=-3x+---

-3x-17=-3x+(-17)

3 0
3 years ago
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To overcome an infection an anti-biotic is injected into David’s bloodstream. After the injection the anti-biotic in his body de
meriva

Answer:

4.45 ccs will remain after 5 hours.

Step-by-step explanation:

The anti-biotic in his body decreases at a rate proportional to the amount, Q(t), present at time t.

(dQ/dt) = - kQ ((Minus sign because it's a rate of reduction)

(dQ/dt) = -kQ

(dQ/Q) = -kdt

 ∫ (dQ/Q) = -k ∫ dt 

Solving the two sides as definite integrals by integrating the left hand side from Q₀ to Q and the Right hand side from 0 to t.

We obtain

In (Q/Q₀) = -kt

(Q/Q₀) = e⁻ᵏᵗ

Q(t) = Q₀ e⁻ᵏᵗ

the initial injection was 8 ccs and 5 ccs remain after 4 hours

Q₀ = 8 ccs,

At t = 4 hours, Q = 5 ccs

5 = 8 e⁻ᵏᵗ

e⁻ᵏᵗ = 0.625

-kt = In (0.625) = -0.47

-4k = 0.47

k = 0.1175 /hour

Q(t) = Q₀ e⁻⁰•¹¹⁷⁵ᵗ

At t = 5 hours, Q = ?

Q = 8 e⁻⁰•¹¹⁷⁵ᵗ

0.1175 × 5 = 0.5875

Q = 8 e(^-0.5875)

Q = 4.45 ccs

Hope this Helps!!!

8 0
3 years ago
Eliana owns the Blossom garden shop. To keep her plants healthy, she always adds 3 cups of fertilizer for every 8 cups of soil.
Nataly [62]

Answer: Eliana should add 9 cups of fertilizer to the pot.

Step-by-step explanation:

Given , Eliana always adds 3 cups of fertilizer for every 8 cups of soil. .

As the quantity of fertilizer is proportional to the quantity of soil.

That means,

\dfrac{\text{Number of cups of fertilizer for 24 cups of soil}}{\text{24}}=\dfrac{\text{Number of cups of fertilizer for 8 cups of soil}}{8}\\\\\Rightarrow \dfrac{\text{Number of cups of fertilizer for 24 cups of soil}}{24}=\dfrac{3}{8}

Multiply 24 on both sides , we get

\Rightarrow\ \text{Number of cups of fertilizer for 24 cups of soil}=\dfrac{3}{8}\times24=3\times3=9

Hence, Eliana should add 9 cups of fertilizer to the pot.

3 0
4 years ago
The function c(p) represents the total cost for a factory to produce p parts. c(p)=12.5p+4500 What does the value 4500 represent
deff fn [24]

Answer:

B

Step-by-step explanation:

c(p)=12.5p+4500

12.5p means that for each part it will cost $12.50, but the initial cost is $4500.  



8 0
3 years ago
Read 2 more answers
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