Problem C

(# 41 - 50)

This last problem is concerned with just certain steps in the hypothesis procedure. You start with the following given information:

The Sampling Distribution being used is the Distribution of Sampling Means (DSM) and the standard Normal Distribution. So z scores will be used throughout the problem. The last five questions will ask you to locate varies statistics on the given graph.

Here is the given information: Ha : u =/= 90 ( symbol =/= is for not equal)

Standard Error(SE) for the Problem has been calculated to be equal to SE = 10

A significance level = 5%, has been chosen for the Problem C.

41 What must be the Null hypothesis?

42	Will this be a directional or non-directional test?

43 Will this be a one tail or two tail test?

44	What is theDecisionRule(s) for this Problem?
45	If the test statistic had a z = - 2.15 what would be your decision?

46	Locate and label the value of the population mean
47	Locate and label the value(s) of the critical cutoff score(s)

48 Locate and label the Do NOT Reject Zone

49 Locate and label of the Rejection Zone(s)

50	Locate and Label the approximate location of the z score = -2.15

If you cant figure out a question or 2 i understand