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miskamm [114]
4 years ago
6

Please provide explanation

Mathematics
1 answer:
rewona [7]4 years ago
7 0

Answer:

≈ 51.5%

Step-by-step explanation:

Percentage gain is calculated as

% gain = \frac{gain}{cost} × 100%

Here the total cost = $8000 + $2300 = $10300

gain = $15600 - $10300 = $5300, thus

% gain = \frac{5300}{10300} × 100% ≈ 51.5%

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1. How many variables are involved in the chi-square test?
GarryVolchara [31]

The result of the respective questions are:

  • This chi-square test only takes into consideration one variable.
  • The  type of chi-square test this is is a Goodness of Fit
  • df= 3
  • NO

<h3>How many variables are involved in the chi-square test?</h3>

a)

This chi-square test only takes into consideration one variable.

b)

The  type of chi-square test this is, is a Goodness of Fit

To test the hypothesis, we must determine whether the actual data conform to the assumed distribution.

The "Goodness-of-Fit" test is a statistical hypothesis test that determines how well the data that was seen resembles the data that was predicted.

c)

Parameter

n = 4

Therefore

Degrees of freedom

df= n - 1

df= 4 - 1

df= 3

d)

In conclusion

Parameters

\alpha = 0.05

df = 3

Hence

Critical value = 7.814728

Test statistic = 6.6

Test statistic < Critical value, .

NO, the result of this test is not statistically significant.

Read more about Probability

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3 0
2 years ago
The circumference of a circular garden is 153.86. What is the radius of the garden? use 3.14 for pie and do not round your answe
dimaraw [331]

Answer:

24.5 is the answer. It is not rounded.

Step-by-step explanation:

You have to work backwards on this problem.  153.86 divided by 3.14 = 49.  But 49 is only your diameter, so you have to divide by 2 to get radius.  49/2 = 24.5.

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7 0
3 years ago
Harold move no more than 43 of his sheep and goats into another field. fewer than 22 this animals are goats.
user100 [1]
A is the answer
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8 0
3 years ago
Solve each pair of simultaneous equations by substitution method
WARRIOR [948]

Answer:

x = 1       y = -4

Step-by-step explanation:

- Plug the value of y into the other equation.

x + 3y = -11

x + 3(-4x) = -11

x - 12x = -11

-11x = -11

x = 1

- Now substitute the value of x into any equation.

y = -4x

y = -4(1)

y = -4

3 0
3 years ago
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A hypothesis test has a significance level of 10%. Explain what this significance level represents.
beks73 [17]
In statistical methods, the significance level is a value that is used as a criterion for rejecting a null hypothesis. It used by first looking at the differences between the experimental results and from there the null hypothesis would be determined. Then, we assume that the null hypothesis is true, the probability of the differences is computed by using statistical tools. If the computed probability is less than or equal to the value of the significance level, then you conclude that the null hypothesis should be rejected and that the results are statistically significant. Usually, a significance level of 1% or 5% is used. 
6 0
4 years ago
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