Answer Happy

n We wish to compare average tree counts for 2 groups of 0.1 hectare plots areas that (1) have never been logged and those which were (2) logged 8 years earlier and left to regrow. The calculated statistics are: Mean Standard deviation (Sx) Group 1 12 23.75 5.065 Group 2 9 15.78 5.761 Use the above figures to perform a hypothesis test to determine if logging has had a significant negative impact on tree counts, using the null and alternative hypotheses: Ho: M1 = 42 Ha: U12
Question 20 Given an a = 5%, and using the conservative estimate of degrees of freedom, what are your findings?: The test suggests a probability value (select p-value), which is less than/ more than a = 5%, therefore there is sufficient/insufficient evidence to reject Ho and conclude that there is a significant/ is not a significant difference between the means of the two groups.