The table shows information about the numbers of hours 30 children spent on their tablets one evening.
Number of hours (h) Frequency
0 4
1 8
2 11
3 7
a) Find the class interval that contains the median.
b) Work out an estimate for the mean number of hours.

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?