In a state lottery, a player can buy a ticket that displays exactly 6 two-digit numbers having values in the range from 01 - 60. In a twice-a-week drawing, 6 numbered ping-pong balls are drawn at random from a hopper, and a ticket whose numbers match all 6 balls wins the jackpot.

A high school statistics student wishes to test whether the lottery drawings are fair. For every drawing during a year, she records the six winning numbers. At the end of the year (after 104 drawings), she plots all the winning numbers with a histogram using the classes 01 - 10, 11 - 20, 21 - 30, 31 - 40, 41 - 50,

Question

In a state lottery, a player can buy a ticket that displays exactly 6 two-digit numbers having values in the range from 01 - 60. In a twice-a-week drawing, 6 numbered ping-pong balls are drawn at random from a hopper, and a ticket whose numbers match all 6 balls wins the jackpot.

A high school statistics student wishes to test whether the lottery drawings are fair. For every drawing during a year, she records the six winning numbers. At the end of the year (after 104 drawings), she plots all the winning numbers with a histogram using the classes 01 - 10, 11 - 20, 21 - 30, 31 - 40, 41 - 50,