Question
What is the appropriate t critical value for each of the following confidence levels and sample sizes? 90% confidence, n = 14
The formula used to calculate a confidence interval for the mean of a normal population is
What is the appropriate t critical value for each of the following confidence levels and sample sizes? (Round
your answers to two decimal places.)
(a) 90% confidence, n = 14
(b) 90% confidence, n = 27
(c) 95% confidence, n = 9
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Koala Tutor
Koala Ai Support
(a) For a 90% confidence level and n = 14, the appropriate t critical value can be found using a t-table or a statistical software. Assuming a two-tailed test, the t critical value is 1.96.
(b) For a 90% confidence level and n = 27, the appropriate t critical value is 1.70.
(c) For a 95% confidence level and n = 9, the appropriate t critical value is 2.26.
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