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Suppose you have selected a random sample of ?=13 measurements from a normal distribution. Compare the...

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Question

Basic Math

Suppose you have selected a random sample of ?=13 measurementsfrom a normal distribution. Compare the standard normal z valueswith the corresponding t values if you were forming the followingconfidence intervals.

a)    80% confidence interval
?=
?=

(b)    90% confidence interval
?=
?=

(c)    99% confidence interval
?=
?=

Answer & Explanation Solved by verified expert
3.9 Ratings (665 Votes)
Solution Given thata At 80 confidence level the z is 1 80 1 080 020 2 020 2 001Z2 Z001 2326n 13Degrees of freedom    See Answer
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