Answer:
a= 90
2a= 135
b=45
c= 45
I think x
Step-by-step explanation:
Answer:
The first opinion
Step-by-step explanation:
Answer:
Look below
Step-by-step explanation:
Pls, choose me as brainliest!
Answer:
About 1.26%
Step-by-step explanation:
Divide 15,750 by 12,500 to find your answer.
Hope this helped!
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)