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A manufacturer claims that its new hand sanitizer reduces the number of days an average person is sick in a year. To test this claim, a researcher decided to conduct an experiment. The researcher randomly selected 300 people, divided into subject groups by age. Over the course of a year, all the subjects regularly used the hand sanitizer. At the end of the year, the researcher compared the number of days that the subjects in each group were sick.

Which statements about this experiment are true?

A manufacturer claims that its new hand sanitizer reduces the number of days an average person is sick in a year To test this claim a researcher decided to cond class=

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Answer:

The study uses blocking and random sampling.

Step-by-step explanation:

The statement with respect to the experiment should be true is that The study uses blocking and random sampling.

What is random sampling?

It should be the part of the technique related to sampling where each and every sample should contain equivalent probability of being selected. The sample that should be selected on random basis should be mean to be non-biased with respect to the total population.

hence, The statement with respect to the experiment should be true is that The study uses blocking and random sampling.

Learn more about experiment here: https://brainly.com/question/9882283

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