Question

mr. rodriguez asked 60 randomly chosen students from each grade level at willowbrook school about their favorite types of reading materials. of those 60 students, 12 chose science fiction. mr. rodriguez used the data to draw the inference that about 20% of middle school students prefer to read science fiction. if 150 students attend the school, did he make a reasonable inference? explain. which did you include in your response? check all that apply. the ratio in the sample is 12/60, or 0.2. the sample was random. the sample was chosen without bias. the sample size was large enough.

Explanation:

Step1: Calculate sample ratio

The ratio of students who prefer science - fiction in the sample is $\frac{12}{60}=0.2$.

Step2: Analyze sampling method

The sample was randomly chosen from each grade level, which means it was random and unbiased.

Step3: Evaluate sample size

Compared to a school population of 150 students, a sample size of 60 is reasonably large.

Answer:

The ratio in the sample is 12/60, or 0.2.
The sample was random.
The sample was chosen without bias.
The sample size was large enough.