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Semenov [28]
3 years ago
7

What guides a researcher when deciding between using either linear, logistic, or Cox proportional hazards regression as an analy

sis tool

Mathematics
1 answer:
castortr0y [4]3 years ago
4 0

Answer:

The outcome variable type (continuous, binary, or time -to- event)

Explanation:

The outcome variable type is the type of variables involved in a research. The researcher would put the type of variable involved in his research into consideration in deciding what regression model to apply in his research. For example, if the type of variable in his research are continuous variables(continuous variables are variables that may be any value within a range and may be infinite), he would use linear regression

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Write four consecutive numbers with a mean and medium of 14.5
Ivanshal [37]

Answer:

13, 14, 15, 16

Step-by-step explanation:

Call the first number  n.  Then the next three consecutive numbers (assuming integers) are  n + 1, n + 2, n + 3.

The mean is the total of the numbers divided by how many there are.

\frac{n+(n+1)+(n+2)+(n+3)}{4}=14.5

Simplify and multiply by 4.

4n+6=58\\4n=52\\n=13

The first number is 13.

The median is 14.5, halfway between the "middle" numbers 14 and 15.  This is just a check; no additional equation is necessary.

4 0
3 years ago
James has 3 hats, 2 pairs of shorts, and 5 shirts to chose from. If he wears exactly 1 of each item, how many different combinat
Dmitriy789 [7]
For each of the 3 choices of hat there are 2 choices of shorts. Therefore there are  3 * 2 combinations of hat and shorts. Each of these 3 * 2 combinations of hat and shorts can be combined with each of the 5 choices of shirt.
Therefore the number of combinations of 1 hat, 1 shirt and 1 pair of shorts is given by:
3\times2\times5=30\ different\ combinations.
8 0
3 years ago
Def is a right triangle
zlopas [31]

if indeed DEF is a right-triangle, then we can apply the pythagorean theorem and the hypotenuse is really the square root of the sum of the square of the other two, if however the hypotenuse doesn't equal that, then is not,


\bf \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies c=\sqrt{a^2+b^2} \qquad \begin{cases} c=\stackrel{hypotenuse}{42}\\ a=\stackrel{adjacent}{26}\\ b=\stackrel{opposite}{23}\\ \end{cases} \\\\\\ 42=\sqrt{26^2+23^2}\implies 42=\sqrt{676+529} \\\\\\ 42=\sqrt{1205}\implies 42\ne 34.7~~\bigotimes

5 0
4 years ago
Read 2 more answers
Is -1/2 rational or irrational
Vladimir79 [104]
-1/2 is rational, have a good day
5 0
4 years ago
Read 2 more answers
Plz help! ill mark brainiest
MrRa [10]

Answer:

part a) linear, linear

part b) function #1

3 0
3 years ago
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