Answer: 0.6812
Step-by-step explanation:
Let p be the population proportion of trees are infested by a bark beetle.
As per given: p= 12%= 0.12
Sample size : n= 1000
Number of trees affected in sample = 1000
Sample proportion of trees are infested by a bark beetle. = 
Now, the z-test statistic : 
So, 

Hence, the value of the z-test statistic = 0.6812 .
Answer: 108
Step-by-step explanation: 60% of 180 is 108
Answer:2
Step-by-step explanation: 5 - 3 = 2
Im not sure but i think the answer is about 266.6
Answer:
h x 5 =95
Step-by-step explanation:
good luck