Two negatives equal a positive, so its just like subtracting 50 and 30, but your answer will be a positive.
Answer:
I think it might be B. but I am not so sure.
Answer:
Step-by-step explanation:
Since population std deviation is not known, we use t critical value for testing of hypothesis.
a) 90% conf level when n =28
df = 27, t critical = 1.706
b) 95% 28
df =27 and t critical = 2.052
c) 90% and 15
df =14 and t critical = 1.761
d) 95% and n =15
df =14: t critical = 2.145
Answer:
F
Step-by-step explanation:
It might not be F. I think it is though
