Help again because i suck
2 answers:
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Answer:
The 95% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample size is n = 26
The mean is
The standard deviation is
From the question we are told the confidence level is 95% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the margin of error is mathematically represented as
=>
=>
Generally 95% confidence interval is mathematically represented as
=>
=>
Answer:
(i)x=-8
(ii)y>18
(iii)x>10
Step-by-step explanation:
I think the ans above is correct.
I hope it will help u....
