According to the National Food Administration, 92% of children under the age of 9 prefer cheese pizza. In a recent study done by Mrs. Woodson's son Liam, he found that of the
35 students in his class, 23 students prefer cheese pizza. What is the NULL hypothesis?
A.)The percentage of children under 9 years old is 75%
B.)The percentage of children under 9 years old is 92%
C.)The percentage of children under 9 years old is less than 75%
D.)The percentage of children under 9 years old is 66%
If it is a null hypothesis, it is wrong, and Liam could be either wrong or it is not a big enough sample. If you divide 23 by 35, you get 0.6571... so it rounds up to .66.
