Question
Jan Villaroel
Topic: Statistics Posted 10 months ago
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
Feb 1, 2024
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(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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