Not yet graded / 10 pts Question 8 A medical researcher treats 400 subjects with high...

Question

Question

math Statistics-And-Probability

Answer 1

Answer #1

Solution :

$\bar x$ = (Lower confidence interval + Upper confidence interval ) / 2

Sample mean = $\bar x$ = (87.06+92.94) / 2=90

confidence interval of the mean is 90

Answer 2

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