Problem #1
Null hypothesis: There is no significant difference in the average achievement scores between Preschool and No-Preschool groups. Alternative hypothesis: There is a significant difference in the average achievement scores between Preschool and No-Preschool groups. H0: μ1=μ2Ha: μ1≠μ2
Calculate the results for independent samples t-test:
Problem #2 Null hypothesis: There is no significant difference in the performance of sales representatives between 1st month and 6th month groups. Alternative hypothesis: The performance of sales representatives in 1st month is significantly less than in 6th month. H0: μ1=μ2Ha: μ1<μ2
The paired t-test should be used:
t=dnd2-d2n-1 t=1.533 The critical t-value for 5% level of significance is 2.132. The paired t-test indicated ...