Given a variable that has a t distribution with the specified degrees of freedom, what percentage of the time will its value fall in the indicated region? (Round your answers to one d place.) (a) 10 df, between -2.23 and 2.23 (b) 10 df, between -2.76 and 2.76 % (c) 24 df, between -3.47 and 3.47

Test significance of r at the 5% and at the 1%

Which z-score has the higher frequency? (a) z = +1.0 or z = +2.3; (b) z = −2.8 or z = −1.7; (c) z = −.70 or z = −.20; (d) z = 0.0 or z = −2.0.

how do i find the C in this problem and solve it.  I am so confused  by the entire problem, but have zero idea how to find C.   find p25 and find the percentile for 6 for time spent on a computer for these office workers.   2, 6,3,4,2,2,1,0,1,3,6,3 order the numbers:   find c.c=n(percentile)/100=___________=_______________ since c is a whole number, average the numbers in teh 3rd and 4th  positions p25=1+2/2=  3/2 =1.5   therefore, 25% fo the values are less than 1.5