## Answers

#by using t 1) The critical value, te forc=0.gg and n=10 15 - table where gris degrees of freedom and 0.005=2/2 = 0.0 to.oos, by = 3.250 is : correct choice A) 3.250 - 2) The t critical value at 95% confidence Level with 2-1=15 degrees of freedom is - too25, 15 = 2.131 # by using S t table correct choice is D) 2131

3) The margin of n=16 and s= 2.6 Error, is for c= 0.99 given by E = tool 2.6-13* in #by using = +0.005, 16 x 2.1 do trable = 2.94780.65 to.oos, is=2.947 = 1.9155 E = 1.92 conrect choice is c) 192 4) The margin of error for C= 0.go. 010 and :3.1 given by E = tolo, mix it in a toos, gx 3.1 = 1.833x .822 0.9803 1796 = 1.80 :- E -1.80)

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