4/6 + 1/12. Quick answer.

You are studying the relationship between the history of early childhood trauma (categorized as trauma/no trauma) and weight in

jeka57 [31]

Answer:

You can decide to reject the Null Hypothesis at p < 0.05.

Step-by-step explanation:

In this case, the relationship between the history of early childhood trauma and weight in adulthood are being studied.

The categories of childhood trauma are:

Trauma and No trauma.

So, number of rows is, r = 2.

The categories of weight in adulthood are:

Low to normal, Overweight, and Obese

So, number of columns is, c = 3.

The distribution of the statistic $\chi^{2}$ is chi-square with (r - 1)(c - 1) degrees of freedom, where r represents the number of rows in the two-way table and c represents the number of columns.

Compute the degrees of freedom as follows:

$df = (r-1)(c-1)=(2-1) \times (3-1) = 2$

It is provided that the calculated value of Chi-square test statistic is 18.26.

Compute the p-value of the test as follows:

$p-value=P(\chi^{2}_{2}\geq 18.26)\\=0.000108\\\approx0.00011$

Decision rule:

The null hypothesis will be rejected if the p-value of the test is less than the significance level.

The significance level is, α = 0.05.

p-value = 0.00011 < α = 0.05.

The null hypothesis will be rejected at 5% level of significance.

Thus, the complete statement is:

"You can decide to reject the Null Hypothesis at p < 0.05."

4 0

3 years ago

How many terms are in the expression? 2x + 4y - 3 A) -3 B) 2 C) 3 D) 4

iragen [17]

Answer:

there are 3 terms no.C)

6 0

3 years ago

Read 2 more answers

What is the surface area of a cone when the slant height is 6 mm and the diameter is 4 mm?

Anna [14]

Diameter of cone = d = 4mm
So,
Radius of cone = r = 2mm
Slant Height = l = 6mm
Surface Area = A = ?

The formula for the surface area of cone is:

$A= \pi r(r+l)$

Using the values, we get:

$A= \pi (2)(2+6)=16 \pi$ mm²

Therefore, the surface area of the cone with diameter 4mm and slant height of 6mm will be 16π mm²

8 0

4 years ago

Describe what a slope of -5 means in terms of x and y.

AlexFokin [52]

It means that you have to get a good one for the two weeks and you then have to get the two

6 0

3 years ago

An event is three times as likely as its complement. What is the probability of the event?

serg [7]

E = some event
C = complement of event E
Since the events are complementary, this means P(E)+P(C) = 1

We know that P(E) = 3*P(C) since "an event is three times as likely as its complement"

So we can replace P(E) with 3*P(C) and then isolate P(C)
P(E) + P(C) = 1
3*P(C) + P(C) = 1
4*P(C) = 1
P(C) = 1/4

The probability of the complementary event is 1/4
So the probability of the original event is 3/4 (three times 1/4)

Answer: 3/4

note: in decimal form, 3/4 = 0.75

5 0

3 years ago