Author Question: It is desired to test H0: = 40 against H1: < 40 using = 0.10. The population in question is ... (Read 55 times)

madam-professor · **on:** Jul 24, 2018

It is desired to test H0: = 40 against H1: < 40 using = 0.10. The population in question is uniformly distributed with a standard deviation of 10.

A random sample of 36 will be drawn from this population. If is
really equal to 35, what is the probability that the hypothesis test would lead the investigator to commit a Type
II error?
A) 0.0427 B) 0.9573 C) 0.4573 D) 0.0854

Question 2

The city council of a small town needs to determine if the towns residents will support the building of a new library. The council decides to conduct a survey of a sample of the towns residents.

Which one of the following procedures would be most appropriate for obtaining a sample of the towns residents? A) Survey a random sample of persons within each neighborhood of the town.
B) Survey a random sample of librarians who live in the town.
C) Survey 500 individuals who are randomly selected from a list of all people living in the state in which the
town is located.
D) Survey every 7th person who enters the old library on a given day.