Answered: Types of Automobiles Purchased In a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Types of Automobiles Purchased In a recent year U.S. retail automobile sales were categorized as listed below.

luxury

15.6%

large

midsize

42%

small

36.4%

A random sample of

150

recent purchases indicated the following results:

were luxury models,

were large cars,

were midsize, and

were small cars. At the

0.05

level of significance, is there sufficient evidence to conclude that the proportions of each type of car purchased differed from the report? Use the traditional method of hypothesis testing. Assume all assumptions are met.

Find the critical value. Round the answer to at least three decimal places.

The critical value is

Make the decision.

▼(Choose one) the null hypothesis.

Summarize the results.

There is ▼(Choose one) evidence ▼(Choose one) the null hypothesis that proportion of adults who do not have health insurance is equally distributed among the three education categories.

If the null hypothesis is rejected, give a possible reason for this.

Those with ▼(Choose one)

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