In a two-tailed test for correlation at α = .05, a
sample correlation coefficient r = 0.42 with n =
25 is significantly different than zero.
True or False
1. Determine the critical value of Z for a left tailed test
regarding a population mean at the alpha ?= .05 level of
significance.
2. Determine the critical value of t for a? two-tailed test of a
population mean at the alpha ?= .05 level of significance based on
a sample size of n? = 14? (13 d.f.).
3. Determine if the following statement is true or false.
When testing a hypothesis using the? P-value Approach, if the?
P-value is?...
Find the t-critical values (tcrit) that form the rejection
region for a two-tailed test with α = .05 for each of the following
sample sizes.
a. N = 10 ________2.262____________
b. N = 17 _________2.120___________
c. N = 27 _________2.056____________