Homework Soursea researcher conducted a study of five randomly selected nei
a researcher conducted a study of five randomly selected neighborhood cats. He reported the mean span to be 1.2 inches with a standard deviation of 0.2 inches.
Which conclusion is valid from this data?
A. The study included a cat with a paw span of 1.2 inches
B. Most adult cats have a paw span between 1.0 and 1.4 inches
C. The average paw span of an adult cat is 1.2 inches
D. The sum of the five cat paw spans was 6 inches
a researcher conducted a study of five randomly selected neighborhood cats. He reported the mean span to be 1.2 inches with a standard deviation of 0.2 inches.
Which conclusion is valid from this data?
A. The study included a cat with a paw span of 1.2 inches
B. Most adult cats have a paw span between 1.0 and 1.4 inches
C. The average paw span of an adult cat is 1.2 inches
D. The sum of the five cat paw spans was 6 inches
a researcher conducted a study of five randomly selected neighborhood cats. He reported the mean span to be 1.2 inches with a standard deviation of 0.2 inches.
Which conclusion is valid from this data?
A. The study included a cat with a paw span of 1.2 inches
B. Most adult cats have a paw span between 1.0 and 1.4 inches
C. The average paw span of an adult cat is 1.2 inches
D. The sum of the five cat paw spans was 6 inches
Solution
ANSWER: D. The sum of the five cat paw spans was 6 inches.
A is not correct because they could average 1.2 without having a 1.2. Ex: 1,1,1,1,2.
B is not correct as the sample size is so small that we cannot generalize.
The same is true for option C. We cannot truly know the population mean from a sample.
Hence, only option D is correct.
