Question
what happens to the width of our confidence interval for mu if we increase the sample size but keep the confidence level the same ?
a. it increases
b. it stays the same
c. it decreases
d. it depends on the sample mean and standard deviation
a. it increases
b. it stays the same
c. it decreases
d. it depends on the sample mean and standard deviation
Answers
C. SEm = SD/√n
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