The area will need treated with herbicides

Report the result below:

90% CI:

3.5 units. Conduct statistical test to determine if the mean weed biomass in the studied area exceeds the threshold. Use α=0.05.

A) By-hand:

Report the result below:

p-value:

3) If the researchers hypothesize that the population mean for the weed biomass in the studied area is equal to 5 units. What would be the probability of the Type II error of the statistical test conducted in question 2)?

By- software (either SAS or R):