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m_a_m_a [10]
2 years ago
8

Under what circumstances will the chi-square test for goodness of fit produce a large value for chi-square? Question options: a.

when the sample proportions are much different than the hypothesized population proportions b.when the sample mean is close to the population mean
Mathematics
1 answer:
Whitepunk [10]2 years ago
4 0

Answer:

a.when the sample proportions are much different than the hypothesized population proportions

Step-by-step explanation:

A chi-square test for goodness of fit is used to check the sample data were distributed according to claim or not.

If the chi-square test produces a large value of chi-square statistic then there is not a good fit between sample data and the null hypothesis. So, the sample proportions are much different than the hypothesized population proportions. Hence,Option (a) is correct.

If the goodness of fit produces a large value for chi-square then the sample means must not be close to the population mean. So, option (b) is incorrect.

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Un guardia forestal divisa, desde un punto de observación A, un incendio en la dirección N27° 10’ E. Otro guardia, que se encuen
Inga [223]

Answer:

la distancia del punto de observación A al incendio = 5.5 millas

la distancia del punto de observación B al incendio = 3.8 millas

Step-by-step explanation:

La expresión esquemática de la pregunta se puede ver en la imagen adjunta a continuación :

Del siguiente diagrama;

Usando la sine regla:

\dfrac{sin \  F}{f} = \dfrac{sin  \ A }{a}

\dfrac{sIn \  79}{6} = \dfrac{sin \   63}{a}

a sin 79 = 6 sin 63

a =\dfrac{6 \times sin \ 63}{sin \ 79}

a =\dfrac{6 \times 0.8910}{0.9816}

a = 5.446 millas

la distancia del punto de observación A al incendio = 5.5 millas (a la décima más cercana)

\dfrac{sin \  F}{f} = \dfrac{sin  \ B}{b}

\dfrac{sin \  79}{6} = \dfrac{sin  \ 38}{b}

b sin 79 = 6 sin 38

b  = \dfrac{6 \times sin  \ 38}{sin \  79}

b  = \dfrac{6 \times0.6157 }{0.9816}

b = 3.7635 millas

la distancia del punto de observación B al incendio = 3.8 millas (a la décima más cercana)

8 0
2 years ago
Write a program that prompts the user to read two integers and displays their sum . if anything but an integer is passed as inpu
natka813 [3]
<span>The Java code below will ask for two integers and display the sum. If a non-integer is submitted the code will ask again. The break is used to exit the while true loop indicating that no-errors had occurred and two numbers were added. System.out.print("Please insert two integers and this will display the sum."); int numOne; int numTwo; while (True) { try{ System.out.print("Integer Number One? "); numOne = input.nextInt(); System.out.print("Integer Number Two? "); numTwo = input.nextInt(); System.out.print("The Sum Is: " + (numOne + numTwo)); break; } catch (InputMismatchException e) { System.out.print("please enter an integer ."); } }</span>
4 0
2 years ago
Company A charges $331.35 per week for a compact car with unlimited miles. Company B charges $175 per week plus $0.53 per mile,
Vladimir [108]

Answer:

Company A is a better deal than Company B for the number of miles greater than 295 miles

Step-by-step explanation:

Let

y ----> the charge per week in dollars

x ----> the number of miles

we have

<em>Company A</em>

y=331.35 -----> equation A

<em>Company B</em>

y=0.53x+175 -----> equation B

Solve the system by substitution

Equate equation A and equation B and solve for x

331.35=0.53x+175

0.53x=331.35-175\\0.53x=156.35\\x=295\ mi

For x=295 miles the charge in Company A and Company B is the same

therefore

Company A is a better deal than Company B for the number of miles greater than 295 miles

5 0
2 years ago
A family needs to build fencing around their rectangular home and square swimming pool, depicted below. A rectangle labeled home
Andrej [43]

Answer:

The total amount of fencing they need can be written as  

38 x + 10.

If x = 5;

The family needs  160  yards of fencing for their home.

The family needs  40  yards of fencing for their pool.

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Last year Boris paid £256 for his car insurance.
jenyasd209 [6]

Answer:

The percentage increase in the cost of Boris car insurance cost is 249%

Step-by-step explanation:

In this question, we want to calculate the percentage increase in the cost of car insurance paid by Boris

Mathematically, to calculate this percentage increase, we shall need to make use of a mathematical formula.

Mathematically, the percentage increase would be;

{(new value paid-old value paid)/old value paid} * 100%

From the question, we can identify that the old value paid is £256 while the new value paid is £894

Thus, the percentage increase would be ;

(894-256)/256 * 100% = 638/256 * 100 = 2.4921875 * 100 = 249.21875 which is 249% increase to the nearest whole percentage

6 0
2 years ago
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