Answer:
C.
Step-by-step explanation:
Science questions are T/F. That's .5 or 
chance to get it right.
7 questions. Each with a .
That's 
= 
= .0078 = .008 rounded
English questions are multiple choice. 4 choices. That's .25 or 
3 questions. Each
That's 
= 
= .0156 = .016 rounded
Given that the mean is $9.5 and the standard deviation is $1.30, the standard error will be given by:
σ/√n
where
σ-standard deviation
n=sample size
thus, we shal have:
1.30/√20
=0.2906
Next we find the margin error
0.2906*2=0.581
thus the confidence interval will be:
(9.5+0.581, 9.5-0.581)
=(10.081,8.919)
Answer:
True
Step-by-step explanation:
an obtuse triangle is a big one, an acute triangle is a small one. They are both triangles, but they are not similar besides that
Answer:2.18 m
Step-by-step explanation:
When you draw it it forms a right angled triangle. In order to get the height we must use sine.
The sine of 27° is the height divided by 4.8 m
