Greg tossed on number cube and recorded the results. the table shows the number of times he rolled each number. based on the table, what is the experimental probability of rolling a four on the next toss? 1 rolled 7 times 2 rolled 5 times 3 rolled 6 times 4 rolled 4 times 5 rolled 8 times 6 rolled 6 times what is the probability he will roll a four again? a) 1/8 b) 1/9 c) 1/6 d) 2/9

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3