1. Suponga que seleccionó una muestra aleatoria de \( n-7 \) mediciones de una distribución normal Compare los valores-z normal estándar con los correspondientes valores-t necesarios para construir los siguientes intervalos de confianza Utilice un software, tablas o el applet sobre distribuciones de probabilidad a. Intervalo de confianza de \( 80 \% \) b. Intervalo de confianza de \( 90 \% \) c. Intervalo de confianza de \( 95 \% \) d. Intervalo de confianza de \( 98 \% \) e. Intervalo de confianza de \( 99 \% \)

Write down the upper and lower quartiles. Upper Quartile = Lower Quartile = Question 3

In a class, there are 750 learners in 1st year, 420 learners in 2 nd year. Draw a pie graph to represent the numbers of learners in these groups.

men are randomly selected and tested. Among the men, 563 have color blindness, and among the wo lindness than women at an \( \alpha=0.05 \) level of significance. Round all values to at least 4 decimal places.

a) Copy and complete the equation of the line of best fit below. Give any decimals in your answer to 1 d.p.

QS-8 company that makes hair-care products had 7,000 people try a new shampoo. Of the 7,000 people, 14 had a mild allergir eaction. What percent of the people had a mild allergic reaction?