The Answer is the last one. it equals -1
Answer:
The null and alternative hypothesis is
and
respectively.
Step-by-step explanation:
Consider the provided information.
If there is no statistical significance in the test then it is know as the null which is denoted by
, otherwise it is known as alternative hypothesis which denoted by
.
Consider the statement:
Test to see whether the mean tree planting time differ from two hours.
The null hypothesis is: 
Therefore, the alternative hypothesis is: 
Thus, the null and alternative hypothesis is
and
respectively.
Answer:
12323232321
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
Answer:
a = 12
x = 5.714
Step-by-step explanation:
sf = 15 / 9
20 / (15 / 9) = 12
a = 12
sf = 21 / 6
20 / (21 / 6)
x = 5.714