Question

Let t be a t-random variable. P(t>a) 0.025 and 12 degrees of freedom. Find a. P(t < a) 0.05 and 21 degrees of freedom. Find a. P(-a < t<a) = 0.95 and 27 degrees of freedom. Find a. For 15 degrees of freedom, find P(t < 1.753) For 22 degrees of freedom, find P(-2.074 < t < 2.074). Use Excel function =t.dist to find P(t<-2.86) with df 25 Use Excel function =t.dist.rt to find P(t > 1.33) with df 29 P(t< a) 0.05 and 65 degrees of freedom. Use Excel function -t. inv to find a. a. b. C. d. e. f. g. h.

Answer 1

df = 12 O025 Pltya) (a) -o'0 2 5 P(ta) O 75 a to975.12 = 2.179 a 2.18 plta) O.05 to 05,21 = 21 -72. d27 PC ta z095 Ptts-a) 2S ts-) 0 2 S to 025, 27 = - 2. CO 52 2«05 to.975.2 2 052 a 2. 05

|(d) Pltzい753) df い753)
my dear student you posted multiple questions as per HomeworkLib rules I have solved the first 4 questions.Thank you.