The t distribution should be used whenever _____. Group of answer choices the population is not normally distributed the sample standard deviation is used to estimate the population standard deviation None of the answers is correct. the sample size is less than 30
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Step 1: Understand that the t distribution is specifically used when the population standard deviation is unknown, meaning we have to substitute the sample standard deviation as an estimate of it. Show more…
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Chapter 6; Section Problem 042 The t-distribution should be used whenever the population is not normally distributed, the sample size is less than 30, and the sample standard deviation is used to estimate the population standard deviation. None of the other answers are correct.
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Which of the following assumptions is NOT needed to use the t – distribution to make confidence interval for μ? A. The sample size is at least 10. B. The sample size is less than 30. C. The population standard deviation is unknown D. The population from which the sample is taken s approximately normally distributed. Which of the following is not required to apply the t – distribution? A. n < 30 B. σ is known. C. σ is unknown D. population is nearly normally distributed What is the t – value for a 95% confidence interval with n = 10?
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