6. Which of the following statements are TRUE? I. When ? < 30, both ?ത and...
6. Which of the following statements are TRUE?
I. When ? < 30, both ?ത and ? = (?̅− ?)/ ?⁄√?, are normally distributed.
II. When ? < 30 and population variance is unknown the ? distribution is used for testing µ.
III. ? distribution is mound shaped and symmetric at ? = 0.5.
IV. The degrees of freedom associated with the testing of 1 population variance is ? − 1.
A. I and II C. II and III B. I and III D. II and IV
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6. Which of the following statements are TRUE?
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Identify each of the following statements as either TRUE or FALSE. a) Click for List The t distribution tends toward the standard normal distribution as the degrees of freedom increase. b) Click for List The t distribution has more area in the tails than the standard normal distribution. Click for List If I is a random variable with a t distribution, then P(T<0) = 0.5. Click for List If we wish to carry out inference procedures on the mean...
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