1. Below are some research situations. For each of them, indicate whether it is appropriate to carry out a correlation analysis or a regression analysis. Justify your answer. a) Academic performance at a University favors professional success b) Training time influences professional performance c) The objective is to estimate the time required to execute a given task using, for this purpose, the executor's training time d) The variation in the quantity demanded of cattle meat depends on the price that the meat has

Sea \( X \) una variable aleatoria con \( N(10,5) \), para que valor de \( x \) se cumple la siguiente probabilidad. \( P(X<x)=0.975 \)

Twelve percent of your customers buy 4 desserts. How many desserts can you expect to sell to 500 people?

MAT 141 Cumulative Final Exam - Chapters \( 1-12 \) Score: \( 26.3 / 111 \) Answered: \( 16 / 75 \) The city of Raleigh has 11,900 registered voters. There are two candidates for city council in an upcoming election: Brown and Feliz. The day before the election, a telephone poll of 250 randomly selected registered voters was conducted. 146 said they'd vote for Brown, 87 said they'd vote for Feliz, and 17 were undecided. Use this information from the sample to complete the following statements about the population of all registered voters in Raleigh. Round your answers to the nearest person. Based on this sample, we could expect \( \square \) of the 11,900 registered voters to vote for Brown. Based on this sample, we could expect \( \square \) of the 11,900 registered voters to vote for Feliz. Based on this sample, \( \square 11,900 \) registered voters are still undecided.

En un estudio realizado a 120 estudiantes de la UNAD sobre su participacion en actividades académicas (C) Conferencias, (W) Workshops y (S) Seminarios, se encontró la siguiente información: .20 estudiantes asisten a conferencias, workshops y seminarios. .30 estudiantes asisten a workshops y seminarios .40 estudiantes asisten a conferencias y workshops. .35 estudiantes asisten a conterencias y seminarios. - 25 estudiantes solo asisten a workshops. .65 estudiantes asisten a conterencias en total. - 55 estudiantes asisten a seminarios en total. ¿Cuântos estudiantes asisten a conferencias o workshops. pero no a seminarios? ¿Cuántos estudiantes asisten solo a conferencias exclusivamente? ¿Cuántos estudiantes asisten a conferencias y seminarios exclusivamente? ¿Existen estudiantes que no asisten a ninguna de las actividades?

Una prueba Psicológica a estudiantes de primer semestre de ingreso a la universidad se obtuvo como resultado un puntaje con media de 150 y desviación estándar de 25 puntos. ¿Cual es el porcentaje de alumnos que sacaron máximo 105 ?