Answer:
Step-by-step explanation:
Solution in given attachment.
Could you send a picture?
1 over the square root of 8 = 4(m - 2) equals m = 2 + the square root of 2<span>2/2 or approximately 2.71. To solve this you need to find the variable, isolate the variable, and then solve. Remember that whatever happens to one side of the equation has to happen to the other.</span>
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)
The answer is D to the next step
