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Q.1

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Found in: Page 621

### The Practice of Statistics for AP

Book edition 4th
Author(s) David Moore,Daren Starnes,Dan Yates
Pages 809 pages
ISBN 9781319113339

# Toyota or Nissan? 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?” (a) Is this a problem with comparing means or comparing proportions? Explain. (b) What type of study design is being used to produce data?

From the given information,

a) The problem is about comparing proportions.

b) Observational study is being used to produce data.

See the step by step solution

## Part (a) Step 1: Given Information

We should structure an examination to discover. Well, select an arbitrary example Of Toyota proprietors and a different irregular example of $400$ Nissan proprietors.

## Part (a) Step 2: Explanation

Heretofore, two categories are involved in this problem, that is, Yes or No. It means that the collected data is categorical the mean cannot be computed here. Thus, it could not be completed that the problem is about proportions.

## Part (b) Step 3: Given Information

It is given in the question, What type of study design is being used to produce data?

## Part (b) Step 4: Explanation

Heretofore the observational study does not affect the outcome and in the supplied case no outcomes have been influenced here. Therefore, the study is observational.

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