Consider the following hypotheses: H0: = 380 HA: 380 The population is normally distributed with a population standard deviation of 63. (You may find it useful to reference the appropriate table:z table ort table) a-1. Calculate the value of the test statistic with x = 393 and n = 95. (Round final answer to 2 decimal places.) a-2. What is the conclusion at the 10% significance level? multiple choice 1 Do not reject H0 since the p-value is greater than the significance level. Do not reject H0 since the p-value is less than the significance level. Reject H0 since the p-value is greater than the significance level. Reject H0 since the p-value is less than the significance level. a-3. Interpret the results at = 0.10. multiple choice 2 We cannot conclude that the population mean differs from 380. We conclude that the population mean differs from 380. We cannot conclude that the sample mean differs from 380. We conclude that the sample mean differs from 380. b-1. Calculate the value of the test statistic with x = 359 and n = 95. (Negative value should be indicated by a minus sign. Round final answer to 2 decimal places.) b-2. What is the conclusion at the 5% significance level? multiple choice 3 Reject H0 since the p-value is greater than the significance level. Reject H0 since the p-value is less than the significance level. Do not reject H0 since the p-value is greater than the significance level. Do not reject H0 since the p-value is less than the significance level. b-3. Interpret the results at = 0.05. multiple choice 4 We conclude that the population mean differs from 380. We cannot conclude that the population mean differs from 380. We conclude that the sample mean differs from 380. We cannot conclude that the sample mean differs from 380..

1. Considere la siguiente regresin:*
SPIi = 17,8 + 33,2 Ginii
se = (4.9) (11.8) r^2 = 0.16
Donde ndice SPI de inestabilidad sociopoltica, promedio de 19601985, y Gini
Coeficiente de Gini para 1975 o el ao ms cercano disponible dentro del rango de 19701980.
La muestra consta de 40 pases.
El coeficiente de Gini es una medida de la desigualdad de ingresos y se encuentra entre 0 y 1.
Cuanto ms cerca est de 0, mayor ser la igualdad de ingresos, y cuanto ms cerca est de 1, mayor
ser la igualdad de ingresos.
mayor la desigualdad de ingresos.
a. Cmo interpretas esta regresin?
b. Suponga que el coeficiente de Gini aumenta de 0,25 a 0,55. A cunto asciende el SPI?
subir? Qu significa eso en la prctica?
C. Es el coeficiente de pendiente estimado estadsticamente significativo al nivel del 5%?
Mostrar la
clculos necesarios.
d. Con base en la regresin anterior, puede argumentar que los pases con mayor in-
Por qu la desigualdad es polticamente inestable?