Discuss the below:
Q1. Suppose you want to test the claim that the mean does not equal 3.5. Given a sample size of n = 31 and a level of significance of when should you reject H0 ?
a. Reject H0 if the standardized test statistic is greater than 2.33 or less than -2.33
b. Reject H0 if the standardized test statistic is greater than 1.645 or less than -1.645.
c. Reject H0 if the standardized test statistic is greater than 2.575 or less than -2.575.
d. Reject H0 if the standardized test statistic is greater than 1.96 or less than -1.96
Q2. Find the standardized test statistic to test the claim that 1 = 2. Two samples are randomly selected from each population. The sample statistics are given below.
n1=40 n2=35
x1=4 x2=5
s1=2.5 s2=2.8
1. -2.6 2. -1.0 3. -1.6 4. -0.8