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Recent questions in Statistics and Probability

Mackenzie Rios 2022-05-24 Answered

Is there a method for polynomial regression in $2 D$ dimensions (fitting a function $f (x, y)$ to a set of data $X, Y$ , and $Z$ )? And is there a way to apply a condition to the regression in $2 D$ that requires all functions fitted to go through the axis line $x = 0$ ?

agdv9m 2022-05-24 Answered

set $S$ of coordinates $(x, y)$ , and am estimating $f (x) = a x + b$ where $a > 0$ . I also happen to know that $\forall x, y ((x, y) \in S ⟹ y < f (x))$ .
The question is how I can utilize this knowledge of the upper bound on values to improve the regression result?
My intuition is to run a "normal" linear regression on all coordinates in $S$ giving $g (x)$ and then construct $g^{'} (x) = g (x) + c$ , with $c$ being the lowest number such that $\forall x, y ((x, y) \in S ⟹ y \leq g^{'} (x))$ , e.g. such that $g^{'} (x)$ lies as high as it can whilst still touching at least point in $S$ . I do, however, have absolutely no idea if this is the best way to do it, nor how to devise an algorithm that does this efficiently.

hoperetauyk 2022-05-24 Answered

How do you evaluate 5P5?

Carlie Fernandez 2022-05-24 Answered

There are 10 bicyclists entered in a race. In how many different orders could these 10 bicyclist finish?

Rachel Villa 2022-05-23 Answered

A random sample of size $n$ from a bivariate distribution is denoted by $(x_{r}, y_{r}), r = 1, 2, 3, . . ., n$ . Show that if the regression line of $y$ on $x$ passes through the origin of its scatter diagram then
$\bar{y} \sum_{r = 1}^{n} x_{r}^{2} = \bar{x} \sum_{r = 1}^{n} x_{r} y_{r}$
where $(\bar{x}, \bar{y})$ is the mean point of the sample.

tenes6x 2022-05-23 Answered

A soccer team has 10 victories, 4 losses and 7 ties throughout their season. In how many different orders can you receive these results?

Emely Baldwin 2022-05-22 Answered

On the situation where taking the numbers 123456 how many numbers can u form using 3 digits with no numbers repeated is that a permutation or combination?

wanaopatays 2022-05-22 Answered

You need to select a 5-character password for an account. You may use the digits 0-9 or the lower case letters a-z. You may repeat digits or letters. How many possible passwords are there?

America Ware 2022-05-22 Answered

Jeff is having a dinner party. He has a large rectangular table that seats 10 people on each long side and 4 people on the two ends. How many people can sit at Jeff's table?

Akira Huang 2022-05-22 Answered

Tate has bag of golf balls 3 red, 5 blue, 2 yellow, and 2 green. What is the probability that he pulls out a red one, replaces it, and then pulls out another red one?

Anahi Jensen 2022-05-21 Answered

A customer in a computer store can choose one of four monitors, one of three keyboards, and one of five computers. How do you determine the number of possible system configurations?

seiyakou2005n1 2022-05-21 Answered

What is 7P2?

groupweird40 2022-05-21 Answered

How many exams consisting of three questions could a professor build from a bank of nine questions?

madridomot 2022-05-21 Answered

How many subsets of five elements can be formed from a set of 80 elements?

hawwend8u 2022-05-21 Answered

How many distinct permutations can be made from the letters of the word "infinity"?

Landyn Jimenez 2022-05-21 Answered

How do you write all possible selections of two letters that can be formed from the letters A, B, C, D, E, and F?

hughy46u 2022-05-21 Answered

How many four letter words are possible using the first 5 letters of the alphabet if letters can be repeated?

2022-05-21

calculating the correct sample size is a critical component of a study design. t/f. quizlet

Kiana Harper 2022-05-20 Answered

Jenna has downloaded 11 songs onto her computer. She wants to create a playlist of 5 songs. How many different 5-song playlists can be created from the downloaded songs?

katkoota00ys 2022-05-20 Answered

Three couples have reserved seats for a Broadway musical. How many different ways they can sit if two members of each couple wish to sit together?

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The majority of probability questions that you shall encounter will not include calculation alone as analysis must be used as well.

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