Calculate probability, Mathematics

Assignment Help:

The following table contains some information about the model used. Assume the probabilities given by the model are those of being a good writer.

Variable

estimate

CI for exp(b)

constant

-16.71

 

Sex

0.46

(0.17,2.32)

level 1

0.88

(0.46,12.68)

level 2

0.16

(0.25,5.58)

Score

0.80

(1.40,3.53)

Suppose the 63 students come from a random sample of students in BC and a principal in a school wants to use this study to get information about good writers. The principal has a lot of questions regarding the probability of being a good writer for different values combinations of the explanatory variables. The questions below are some of those questions posed by the principal.

1. She wants to know the probability of being a good writer for a girl in 5th grade with a score of 18 and for a boy in 7th grade with a score of 12.

2. For boys in 5th grade, she wants to know what is the minimum score needed in order to have a probability greater than 0.5 of being a good writer? What is the minimum score needed in order to have a probability greater than 0.5 of being a good writer for girls on 4th grade?

3. How can you interpret the 95% CI for exp(b1) where b1 is the coefficient corresponding to the sex variable and what can you tell to the principal in terms of differences between girls and boys?

4. The principal tells you that she doesn't really understand about odds and odds ratios and requests that you give her instead a 95% CI for b1. Obtain this interval and mention what can you tell to the principal in terms of differences between girls and boys according to it.


Related Discussions:- Calculate probability

Trigonometry, I am really stuck on this topic and other topics its extremel...

I am really stuck on this topic and other topics its extremely difficult and I dont know what to do Im stressing out help me please.

Free - undamped vibrations, It is the simplest case which we can consider. ...

It is the simplest case which we can consider. Unforced or free vibrations sense that F(t) = 0 and undamped vibrations implies that g = 0. Under this case the differential equation

Solve 5x tan (8x ) =3x trig function, Solve 5x tan (8x ) =3x . Solution...

Solve 5x tan (8x ) =3x . Solution : Firstly, before we even begin solving we have to make one thing clear.  DO NOT CANCEL AN x FROM BOTH SIDES!!! Whereas this may appear like

Determine the critical points, Assume that the amount of money in a bank ac...

Assume that the amount of money in a bank account after t years is specified by, Find out the minimum & maximum amount of money in the account throughout the first 10 years

Algebra 1, how do you factor a trinomial into a binomial ?

how do you factor a trinomial into a binomial ?

Terminology related to division, Terminology related to division :   A goo...

Terminology related to division :   A good way to remedy this situation is to familiarise children with these concepts in concrete, contexts, to start with. For instance, if a chi

Basic Stat, You have been research for your statistics class on how nervous...

You have been research for your statistics class on how nervous the American adults are in general, you have decided to use HINTS 2007 data set that has a scale (going from 0 to 24

What is place value?, WHAT IS PLACE VALUE? : (This section is only for you...

WHAT IS PLACE VALUE? : (This section is only for your assumptions, and not-meant to be passed on to your learners.) You may have realised that in the decimal system the numeral

Determine the inverse transform, Determine the inverse transform of each of...

Determine the inverse transform of each of the subsequent. (a)    F(s) = (6/s) - (1/(s - 8)) + (4 /(s -3)) (b)   H(s) = (19/(s+2)) - (1/(3s - 5))  + (7/s 2 ) (c)    F(s) =

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd