(a) Make sure the inputs are set to df = 20 and p-value of 0.05 (critical value for t will adjust automatically). Now reduce degrees of freedom to 15, then to 10, and then to 5. What happens to the critical valu for t? O It remains the same. O It moves inward toward the center of the distribution. O It moves outward away from the center of the distribution. (b) What is the critical t-value for a two-tailed probability with df = 19 and level of significance of 5%? O +2.861 O 11.729 O +2.093 O +1.328

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Use the applet "t Distribution graph with Text Boxes for df, t, and p" to answer the following questions.
(a) Make sure the inputs are set to df = 20 and p-value of 0.05 (critical value for t will adjust automatically). Now reduce degrees of freedom to 15, then to 10, and then to 5. What happens to the critical value
for t?
O It remains the same.
O It moves inward toward the center of the distribution.
O It moves outward away from the center of the distribution.
(b) What is the critical t-value for a two-tailed probability with df = 19 and level of significance of 5%?
O +2.861
O +1.729
O ±2.093
O +1.328
Transcribed Image Text:Use the applet "t Distribution graph with Text Boxes for df, t, and p" to answer the following questions. (a) Make sure the inputs are set to df = 20 and p-value of 0.05 (critical value for t will adjust automatically). Now reduce degrees of freedom to 15, then to 10, and then to 5. What happens to the critical value for t? O It remains the same. O It moves inward toward the center of the distribution. O It moves outward away from the center of the distribution. (b) What is the critical t-value for a two-tailed probability with df = 19 and level of significance of 5%? O +2.861 O +1.729 O ±2.093 O +1.328
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