Statistics Questions from Nov 12,2024

Browse the Statistics Q&A Archive for Nov 12,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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Score on last try: 0.67 of 1 pts . See Details for more. In a normal distribution, a data value located 1.5 standard deviations below the mean has Standard Score: \( \mathrm{z}= \) In a normal distribution, a data value located 1.7 standard deviations above the mean has Standard Score: \( \mathrm{z}=1.7 \) In a normal distribution, the mean has Standard Score: \( \mathrm{z}=0 \) Question Help: 2. La cantidad de hermanos que tienen 12 estudiantes es: \[ 1,3,2,2,3,2,2,1,1,2,3,2 . \] \begin{tabular}{|c|c|} \hline Dato & \begin{tabular}{c} Cantidad \\ Frecuencia \end{tabular} \\ \hline 1 & \( \square \) \\ \hline 2 & \( \square \) \\ \hline 3 & \( \square \) \\ \hline \end{tabular} Moda Mo= \( \square \) Media \( \bar{X}= \) \( \qquad \) \( \square \) Mediana \( \mathrm{Me}= \) \( \square \) Part A: Identify the constant of proportionality for each salesman. Part B: Compare the constants of proportionality for each relationship. Part C: Determine which sales representative sold the most cars per month. Explain. c) Considerando os dados corretos, pode-se afirmar que mais da metade dos motoristas cometeu seis infrações ou mais? Por quê? 2. A un grupo de estudiantes se les preguntó: "Cuántas veces al mes almuerza en el colegio?" y éstos son los datos recogidos: 2 veces, 5 veces, 8 veces, 10 veces, 12 veces, 12 veces, 2 veces, 15 veces. Organiza los datos y calcula la mediana. b) Aequipe que fez o levantamento dos dados cometeu um erro nos cálculos, contabilizando duas infrações a mais para cada motorista. Construa um histogra- ma com os dados corretos. Fique atento, pois não existe classe com número negativo de infrações. c) Considerando os dados corretos, pode-se afirmar que mais da metade dos motoristas cometeu seis infrações ou mais? Por quê? 2. A un grupo de estudiantes se les pregunto: "Cuántas veces al mes almuerza en el colegio?" y éstos son los datos recogidos: 2 veces, 5 veces, 8 veces, 10 veces, 12 veces, 12 veces, 2 veces, 15 veces. Find the mean of \( 1,9,8,1,7,4 \) graphically. What is the sum of the numbers? Find the mean of \( 7,4,8,9,7 \) graphically. \[ 7+4+8+9+7=35 \] What is the average value? 4) Sketch the least squares regression line (LSRL) on strong and weak correlations.
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