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StatisticsEssentials Of StatisticsS O C / C J A survey shows that 10% of the population is victimized by property crime each year. A random sample of 527 older citizens (65 years or more of age) shows a victimization rate of l4%. Are older people more likely to be victimized? Conduct both one- and two-tailed tests of significance.BuyFind*arrow_forward*

4th Edition

HEALEY + 1 other

Publisher: Cengage Learning,

ISBN: 9781305093836

Chapter 7, Problem 7.11P

Textbook Problem

Expert Solution

To determine

**To find:**

The significant difference between the given statements.

**Given:**

The given information is,

A survey shows that 10% of the population is victimized by property crime each year. A random sample of 527 older citizens (65 years or more of age) shows a victimization rate of l4%.

**The five step model for hypothesis testing is:**

Step 1. Making assumptions and meeting test requirements.

Step 2. Stating the null hypothesis.

Step 3. Selecting the sampling distribution and establishing the critical region.

Step 4. Computing test statistics.

Step 5. Making a decision and interpreting the results of the test.

**Formula used:**

For large samples with single sample proportions, the *Z* value is given by,

Where,

*N* is the sample size.

**Calculation:**

From the given information, the sample size is 527, sample proportion is

Follow the steps for one-tailed hypothesis testing as,

Step 1. Making assumptions and meeting test requirements.

Model:

Random sampling.

Level of measurement is interval ratio.

Sampling distribution is Normal.

Step 2. Stating the null hypothesis.

The statement of the null hypothesis is that older citizens are not likely to be victimized more than the population average and the alternative hypothesis is that older citizens are more likely to be victimized than the population average.

Thus, the null and the alternative hypotheses are,

Step 3. Selecting the sampling distribution and establishing the critical region.

Since, the sample is large, *Z* distribution can be used.

The information given is in the form of proportions, the test for proportion can be used.

Thus, the sampling distribution is *Z* distribution.

The level of significance is

And area of critical region is

Step 4. Computing test statistics.

For large samples with single sample proportions, the *Z* value is given by,

For sample proprtion *Z* value is given by,

Substitute 0.14 for

Essentials Of Statistics

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