In each of the following instances, determine whether you would use a z- or t-statistic (or neither)
Question:
In each of the following instances, determine whether you would use a z- or t-statistic (or neither) to form a 99% confidence interval for m; then look up the appropriate z or t value.
a. Random sample of size n = 17 from a normal distribution with unknown mean m and standard deviation s
b. Random sample of size n = 192 from a normal distribution with unknown mean m and standard deviation s
c. Random sample of size n = 16 from a normal distribution with unknown mean and standard deviation s = 4
d. Random sample of size n = 80 from a distribution about which nothing is known
e. Random sample of size n = 12 from a distribution about which nothing is known
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Related Book For
Statistics Plus New Mylab Statistics With Pearson Etext Access Card Package
ISBN: 978-0134090436
13th Edition
Authors: James Mcclave ,Terry Sincich
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