Are Toyota or Nissan owners more satisfied with their vehicles? Let’s design a study to find out. We’ll select a random sample of 400 Toyota owners an

DofotheroU 2021-05-22 Answered
Are Toyota or Nissan owners more satisfied with their vehicles? Let's design a study to find out. We'll select a random sample of 400 Toyota owners and a separate random sample of 400 Nissan owners. Then we'll ask each individual in the sample: "Would you say that you are generally satisfied with your (Toyota/Nissan) vehicle?" What type of study design is being used to produce data?

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Expert Answer

escumantsu
Answered 2021-05-23 Author has 8934 answers
An experiment deliberately imposes some treatment on individuals in order to observe their responses.
An observational study tries to gather information without disturbing the scene they are observing.
Observation study.
Thus we have an observational study that will compare the proportions of two samples originating from two independent populations.
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A survey was designed to study how business operations vary according to their size. Companies were classified as small, medium, or large. Questionnaires were sent to 200 randomly selected businesses of each size. Because not all questionnaires were returned, researchers decided to investigate the relationship between the response rate and the size of the business. The data are given in the two-way table. \(\begin{array} {lc} & \text{Business size} \ \text {Response?} &\begin{array}{l|c|c|c|c} & \text { Small } & \text { Medium } & \text { Large } & \text { Total } \\ \hline \text { Yes } & 125 & 81 & 40 & 246 \\ \hline \text { No } & 75 & 119 & 160 & 354 \\ \hline \text { Total } & 200 & 200 & 200 & 600 \end{array} \\ \end{array}\)

 Which variable should be used as the explanatory variable? Explain.

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A survey was designed to study how business operations vary according to their size. Companies were classified as small, medium, or large. Questionnaires were sent to 200 randomly selected businesses of each size. Because not all questionnaires were returned, researchers decided to investigate the relationship between the response rate and the size of the business. The data are given in the two-way table.

\(\begin{array}{|c|c|}\hline \text{Business size} & & \text{Small} & \text{Medium} & \text{Large} & \text{Total} \\ \hline \text{Response?} & \text{Yes} & 125 & 81 & 40 & 246 \\ \hline & \text{No} & 75 & 119 & 160 & 354 \\ \hline & \text{Total} & 200 & 200 & 600 \\ \hline \end{array}\)

Construct a segmented bar chart to summarize the relationship between business size and whether or not the business replied to the survey.

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