I believe it is C but I’m not sure
Answer:
-17x is the answer mark me brainliest
T - ( - 10) = 9
t + 10 = 9
t = 9 - 10
t = -1
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Answer: t = -1
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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)
