Problem: In a class of 33 Grade 6 students in ACT-IS. 13 of them are boys and 20 are girls. 7 out of 13 boys wear glasses and 11 out of 20 girls wear glasses. 18. What is the ratio between the number of girls to the number of boys in Grade 6?

Key in your answers in ratio form. Example: 12:13

Television viewing reached a new high when the global information and measurement company reported a mean daily viewing time of 8.35 hours per household. use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household. a. what is the probability that a household views television between 4 and 10 hours a day? (to 4 decimals) b. how many hours of television viewing must a household have in order to be in the top 7% of all television viewing household? (to 2 decimals) c. what is the probability that a household views television more than 4 hours a day? (to 4 decimals)