In a local university, 40 of the students live in the ...

[bobbie]

In a local university, 40 of the students live in the dormitories. A random sample of 80 students is selected for a particular study. The probability that the sample proportion (the proportion living in the dormitories) is between 0.30 and 0.50 is
 a. 0.4664
   b. 0.9328
   c. 0.0336
   d. 0.0672

Question 2

A test used to determine whether or not first-order autocorrelation is present is
 a. serial-autocorrelation test.
  b. t test.
  c. chi-square test.
  d. Durbin-Watson Test.

[Jbrasil]

Answer to Question 1

b

Answer to Question 2

d