If all other quantities remain the? same, how does the indicated change affect t
ID: 3376568 • Letter: I
Question
If all other quantities remain the? same, how does the indicated change affect the width of a confidence? interval?
?(a) Increase in the level of confidence
?(b) Increase in the sample size
?(c) Increase in the population standard deviation
?(a) How does an increase in the level of confidence affect the width of a confidence? interval? Choose the correct answer below.
An increase in the level of confidence
?
will narrow
does not change
will widen
the confidence interval.
?(b) How does an increase in the sample size affect the width of a confidence? interval? Choose the correct answer below.
An increase in the sample size
?
will narrow
does not change
will widen
the confidence interval.
?(c) How does an increase in the population standard deviation affect the width of a confidence? interval? Choose the correct answer below.
An increase in the population standard deviation
?
will widen
will narrow
does not change
the confidence interval.
Explanation / Answer
Ans:
a)An increase in the level of confidence will widen the confidence interval.
b)An increase in the sample size will narrow the confidence interval.
c)Increase in the population standard deviation will widen the confidence interval.
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