SELECCIONA LA RESPUESTA CORRECTA. 1. Se realiza una auditoria de historias clínicas tomando una primeria historia al azar y después sucesivamente, la que ocupa la vigésima posición detrás de la anterior. Este procedimiento de muestreo se denomina: (a) Por conglomerados (b) Sistemático (c) Correlativo (d) Aleatorio simple (e) Estratificado 2. Se realiza un estudio con objeto de determinar el tiempo de supervivencia en pacientes con cáncer. Para ello de los dos hospitales existentes en una ciudad, se selecciona aleatoriamente uno de ellos, y se elige una muestra aleatoria de pacientes, atendiendo al tipo de cáncer. El muestreo realizado es: (a) Sistemático (b) Aleatorio (e) Por conglomerados y estratificado (c) Por conglomerados (d) Estratificado 3. Se desea estimar confidencialmente el número medio de veces que asiste a un servicio de salud los individuos de una población. Para ello se toman muestras aleatorias entre los individuos que asisten regularmente a los mismos. Esta técnica de muestreo es: (a) Un muestreo aleatorio simple. (b) Un muestreo aleatorio estratificado. (c) Un muestreo aleatorio por conglomerados. (d) Incorrecta. (e) Ninguna de las anteriores.

Use this set of numbers to answer the question. \( \begin{array}{l}4,11,6,9,23,34,6,19 \\ \text { What is the median for this set of numbers? } \\ \text { A. } 6 \\ \text { B. } 10 \\ \text { D. } 14 \\ \text { D. } 16\end{array} \)

Find the mean of: \( 1.8,1.7,1.3,1.1,1.2,1.6,1.8 \) A. 1.6 B. 1.4 C. 1.8 D. 1.1 E. 1.5

A national food brand wants to launch a new chip flavor. They run a test study and offer 3 new flavors in select stores around the country.What's the best measure for determining which flavor to launch?Total revenue before and after offering the new flavorsSocial media surveysSales data and frequency of repeat purchases for the new flavorsDiscussions with customers in the stores offering the new flavorsTotal sales for stores offering the new chips against those that are not

\( n = 5 \quad p ( \overline { x } > 500 ) \)

Question 2 ( 0.25 points) Retake question Choose the correct interpretation of a p-value. If the test is right-tailed, the \( p \)-value is the probability of observing a sample proportion as small as we saw in our sample, if the null hypothesis were true. If the test is right-tailed, the \( p \)-value is the probability of observing a sample proportion as large as we saw in our sample, if the null hypothesis were true. If the test is right-tailed, the \( p \)-value is the probability of observing a sample proportion as large as we saw in our sample. If the test is two-tailed, the \( p \)-value is the probability of observing a sample proportion as far away from the null value as what was observed in the current data set.