Hannah is going to play one game of chess and one game of backgammon. The probability she will win the game of chess is 0.6
The probability she will win the game of backgammon is 0.7.
(a) Complete the probability tree diagram
Chess
Backgammon
Hannah
wins
Hannah
wins
Hannah does
not win
Hannah
wins
Hannah
does not
win
Hannah does
not win
(b) Work out the probability that Hannah will win both games.

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

On a piece of paper, graph y< x-1. then determine which answer choicematches the graph you drew.13. z3. 2(3.290-1)

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