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Tatiana [17]
3 years ago
15

Please help this is going to be due soon it’s a test

Mathematics
1 answer:
grandymaker [24]3 years ago
8 0

Answer:

You are not allowed to use brainly for tests.. it is agianst their rules..

Step-by-step explanation:

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Mr. Acosta, a sociologist, is doing a study to see if there is a relationship between the age of a young adult (18 to 35 years o
Alik [6]

Answer:

There is a relationship between the age of a young adult and the type of movie preferred.

Step-by-step explanation:

In this case we need to test whether there is a significance relationship between the age of a young adult and the type of movie preferred.

The hypothesis can be defined as:

<em>H₀</em>: Age of a young adult and movie preference are independent.

<em>Hₐ</em>: Age of a young adult and movie preference are not independent.

The test statistic is given as follows:

\chi^{2}=\sum\limits^{n}_{i=1}{\frac{(O_{i}-E_{i})^{2}}{E_{i}}}

Consider the table below.

The formula to compute the expected frequencies is:

E_{i}=\frac{\text{Row Total}\times \text{Column Total}}{\text{Total}}

The Chi-square test statistic value is:

\chi^{2}=\sum\limits^{n}_{i=1}{\frac{(O_{i}-E_{i})^{2}}{E_{i}}}=2.6013

The significance level of the test is, <em>α</em> = 0.05.

The degrees of freedom of the test is,

df = (r - 1)(c - 1)

   = (3 - 1)(3 - 1)

   = 2 × 2

   = 4

Compute the <em>p</em>-value as follows:

<em>p</em>-value = 0.6266

*Use a Chi square table.

As the <em>p-</em>value is more than the significance level the null hypothesis was failed to be rejected.

Thus, concluding that there is a relationship between the age of a young adult (18 to 35 years old) and the type of movie preferred.

5 0
3 years ago
Lorena runs a landscape company. A customer wants her to plant 10 trees, but the trees have to be planted in rows with 4 trees i
alekssr [168]

There are several shapes that fulfill these requirements. All involve to parallel rows of 4, then the other two trees forming a perpendicular for (using a tree from each of the other two rows).
E.g.

X X X X
X X X X
X
X

X X X X
X
X
X X X X

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5 0
3 years ago
Find the area of a circle with a radius of 6 <br> miles
AveGali [126]

Answer:

36π

Step-by-step explanation:

the formula of the area of the circle is πr^2

if the radius is 6, then its 6*6*π which is 36π

3 0
3 years ago
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Multiply. Express your answer in simplest form. 11 1/9 × 4 2/7
solmaris [256]

Answer:

47 13/21

Step-by-step explanation:

Given

11 1/9 x 4 2/7

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Divide the numerator and denominator by 3

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3 years ago
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Two quantities are related, as shown in the table: x y 2 2 4 5 6 8 8 11 Which equation best represents the relationship? (4 poin
Bogdan [553]
That would be y =3/2 x - 1

Thats the third choice
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3 years ago
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